TY  - JOUR
AU  - Đačanin-Far, Ljubica
AU  - Dramićanin, Tatjana
AU  - Medić, Mina
AU  - Ristić, Zoran
AU  - Periša, Jovana
AU  - Đorđević, Vesna
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12568
AB  - Herein, we demonstrate the photoluminescence properties of Dy3+-activated YNbO4, LuNbO4, and mixed YxLu1−xNbO4:Dy3+ (x=0.25, 0.5, 0.75) phosphors. For this purpose, fve samples with a fxed Dy3+ concentration (2 mol%) were prepared by the solid-state reaction method. X-ray difraction measurements showed that all phosphors crystallize in a monoclinic fergusonite-beta-(Y) structure with a C2/c space group. Scanning electron microscopy clearly shows that samples are composed of dense, well-developed micron-sized, cube-shaped grains with rounded edges. The photoluminescent emission spectra feature Dy3+ peaks at standard positions corresponding to transitions from the 4 F9/2 excited emitting level to the 6 HJ (J=15/2; 13/2; 11/2 and 9/2) lower levels with two dominant emission bands placed in the blue (~479 nm, B) and yellow (~576 nm, Y) spectral region. It is observed that with Lu increase in the host lattice Y/B ratio decreases toward the desired ratio of unity to obtain white light. To evaluate the suitability of these phosphors for use in solid-state lighting, their photoluminescence emission was analyzed in detail by calculating CIE coordinates, correlated color temperature (CCT) and Delta u,v (DUV). It is shown that CIE chromaticity coordinates of all Dy3+-activated YxLu1−xNbO4 samples (x=0, 0.25, 0.5, 0.75, and 1) fall into the white portion of the diagram and that with the increase of Lu in the host lattice color becomes whiter. CCT values for all samples are in the cooler 4000–4500 K range with positive DUVs indicating that color points are placed above the black body curve. The average lifetime of 4 F9/2 level is calculated to be~0.2 ms for all Dy3+-activated YxLu1−xNbO4 samples, indicating that there is no infuence of the Y-to-Lu ratio in the host niobate material on the luminescence kinetics.
T2  - Applied Physics A
T1  - Emission color tunability of dysprosium-activated YNbO4–LuNbO4-mixed phosphors
VL  - 130
IS  - 2
SP  - 107
DO  - 10.1007/s00339-023-07271-z
ER  - 

@article{
author = "Đačanin-Far, Ljubica and Dramićanin, Tatjana and Medić, Mina and Ristić, Zoran and Periša, Jovana and Đorđević, Vesna and Antić, Željka and Dramićanin, Miroslav",
year = "2024",
abstract = "Herein, we demonstrate the photoluminescence properties of Dy3+-activated YNbO4, LuNbO4, and mixed YxLu1−xNbO4:Dy3+ (x=0.25, 0.5, 0.75) phosphors. For this purpose, fve samples with a fxed Dy3+ concentration (2 mol%) were prepared by the solid-state reaction method. X-ray difraction measurements showed that all phosphors crystallize in a monoclinic fergusonite-beta-(Y) structure with a C2/c space group. Scanning electron microscopy clearly shows that samples are composed of dense, well-developed micron-sized, cube-shaped grains with rounded edges. The photoluminescent emission spectra feature Dy3+ peaks at standard positions corresponding to transitions from the 4 F9/2 excited emitting level to the 6 HJ (J=15/2; 13/2; 11/2 and 9/2) lower levels with two dominant emission bands placed in the blue (~479 nm, B) and yellow (~576 nm, Y) spectral region. It is observed that with Lu increase in the host lattice Y/B ratio decreases toward the desired ratio of unity to obtain white light. To evaluate the suitability of these phosphors for use in solid-state lighting, their photoluminescence emission was analyzed in detail by calculating CIE coordinates, correlated color temperature (CCT) and Delta u,v (DUV). It is shown that CIE chromaticity coordinates of all Dy3+-activated YxLu1−xNbO4 samples (x=0, 0.25, 0.5, 0.75, and 1) fall into the white portion of the diagram and that with the increase of Lu in the host lattice color becomes whiter. CCT values for all samples are in the cooler 4000–4500 K range with positive DUVs indicating that color points are placed above the black body curve. The average lifetime of 4 F9/2 level is calculated to be~0.2 ms for all Dy3+-activated YxLu1−xNbO4 samples, indicating that there is no infuence of the Y-to-Lu ratio in the host niobate material on the luminescence kinetics.",
journal = "Applied Physics A",
title = "Emission color tunability of dysprosium-activated YNbO4–LuNbO4-mixed phosphors",
volume = "130",
number = "2",
pages = "107",
doi = "10.1007/s00339-023-07271-z"
}

Đačanin-Far, L., Dramićanin, T., Medić, M., Ristić, Z., Periša, J., Đorđević, V., Antić, Ž.,& Dramićanin, M.. (2024). Emission color tunability of dysprosium-activated YNbO4–LuNbO4-mixed phosphors. in Applied Physics A, 130(2), 107.
https://doi.org/10.1007/s00339-023-07271-z

Đačanin-Far L, Dramićanin T, Medić M, Ristić Z, Periša J, Đorđević V, Antić Ž, Dramićanin M. Emission color tunability of dysprosium-activated YNbO4–LuNbO4-mixed phosphors. in Applied Physics A. 2024;130(2):107.
doi:10.1007/s00339-023-07271-z .

Đačanin-Far, Ljubica, Dramićanin, Tatjana, Medić, Mina, Ristić, Zoran, Periša, Jovana, Đorđević, Vesna, Antić, Željka, Dramićanin, Miroslav, "Emission color tunability of dysprosium-activated YNbO4–LuNbO4-mixed phosphors" in Applied Physics A, 130, no. 2 (2024):107,
https://doi.org/10.1007/s00339-023-07271-z . .

TY  - CONF
AU  - Đačanin Far, Ljubica
AU  - Ćirić, Aleksandar
AU  - Periša, Jovana
AU  - Đorđević, Vesna
AU  - Ristić, Zoran
AU  - Milićević, Bojana
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13229
AB  - As yttrium niobates, the Y2O3–Nb2O5 combination exists in two forms: YNbO4 and Y3NbO7, and the latter has been studied as a host for photoluminescent ions to a limited extent [1-3]. In this research, the powders of Y3NbO7:xDy3+ (x = 0.5, 1, 1.5, 3 and 5 mol%) were produced through a solid-state process. X-ray diffraction investigations confirmed the fluorite-type structure (space group ) of powders with crystallite size in the range of 19–60 nm. Both the photoluminescence excitation and emission spectra revealed the presence of defects within the material. With different excitation wavelengths, the emission spectra exhibited distinct emission patterns. At each excitation wavelength, the emission was quenched at Dy3+ concentration higher than 1mol%. The decay time measurements of the highest intensity emission revealed a progressive decrease from 0.472 milliseconds for x = 0.5 mol% to 0.246 milliseconds for x = 5 mol%. The CIE chromaticity coordinates investigation revealed that the emission color may be altered by varying the excitation wavelength, ranging from blue (excitation at 333 nm) and nearwhite (excitation at 353 nm and 390 nm) to orange (excitation at 457 nm). The chromaticity of emission under 353 nm and 390 nm excitation validated the material's suitability as an almostwhite phosphor.
PB  - Belgrade : Society for science development of Serbia
C3  - SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts
T1  - Novel Y3NbO7:xDy3+ phosphor and its tunable emission
SP  - O-8
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13229
ER  - 

@conference{
author = "Đačanin Far, Ljubica and Ćirić, Aleksandar and Periša, Jovana and Đorđević, Vesna and Ristić, Zoran and Milićević, Bojana and Dramićanin, Miroslav",
year = "2023",
abstract = "As yttrium niobates, the Y2O3–Nb2O5 combination exists in two forms: YNbO4 and Y3NbO7, and the latter has been studied as a host for photoluminescent ions to a limited extent [1-3]. In this research, the powders of Y3NbO7:xDy3+ (x = 0.5, 1, 1.5, 3 and 5 mol%) were produced through a solid-state process. X-ray diffraction investigations confirmed the fluorite-type structure (space group ) of powders with crystallite size in the range of 19–60 nm. Both the photoluminescence excitation and emission spectra revealed the presence of defects within the material. With different excitation wavelengths, the emission spectra exhibited distinct emission patterns. At each excitation wavelength, the emission was quenched at Dy3+ concentration higher than 1mol%. The decay time measurements of the highest intensity emission revealed a progressive decrease from 0.472 milliseconds for x = 0.5 mol% to 0.246 milliseconds for x = 5 mol%. The CIE chromaticity coordinates investigation revealed that the emission color may be altered by varying the excitation wavelength, ranging from blue (excitation at 333 nm) and nearwhite (excitation at 353 nm and 390 nm) to orange (excitation at 457 nm). The chromaticity of emission under 353 nm and 390 nm excitation validated the material's suitability as an almostwhite phosphor.",
publisher = "Belgrade : Society for science development of Serbia",
journal = "SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts",
title = "Novel Y3NbO7:xDy3+ phosphor and its tunable emission",
pages = "O-8",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13229"
}

Đačanin Far, L., Ćirić, A., Periša, J., Đorđević, V., Ristić, Z., Milićević, B.,& Dramićanin, M.. (2023). Novel Y3NbO7:xDy3+ phosphor and its tunable emission. in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts
Belgrade : Society for science development of Serbia., O-8.
https://hdl.handle.net/21.15107/rcub_vinar_13229

Đačanin Far L, Ćirić A, Periša J, Đorđević V, Ristić Z, Milićević B, Dramićanin M. Novel Y3NbO7:xDy3+ phosphor and its tunable emission. in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts. 2023;:O-8.
https://hdl.handle.net/21.15107/rcub_vinar_13229 .

Đačanin Far, Ljubica, Ćirić, Aleksandar, Periša, Jovana, Đorđević, Vesna, Ristić, Zoran, Milićević, Bojana, Dramićanin, Miroslav, "Novel Y3NbO7:xDy3+ phosphor and its tunable emission" in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts (2023):O-8,
https://hdl.handle.net/21.15107/rcub_vinar_13229 .

TY  - CONF
AU  - Ivetić, Tamara
AU  - Banjac, Boris
AU  - Đačanin Far, Ljubica
AU  - Ristić, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13235
AB  - Oxide compounds of the niobate type with the composition ANbO4 (A = Lu, Y, La, Gd) have promising properties as inorganic luminescence host materials [1-5]. The luminescence process of converting lower-energy, long-wavelength NIR light into higher-energy UV or VIS light, known as the luminescence up-conversion (UC) phenomenon, finds wide application in optical and sensor devices and bio-medical imaging and therapy [6]. The UC of rare-earth (RE)-based materials appears mainly through excited-state absorption, energy-transfer upconversion, and photon avalanche mechanisms, the latter of which is rarely found. Niobates ANbO4 (A = Lu, Y, La, Gd) show energy-transfer UC luminescence when doped with Er3+, Ho3+, and Tm3+ ions as activators and often co-doped with Yb3+ ions as sensitizers [7]. The choice of yttrium niobate (YNbO4) as the matrix and rare-earth ions of erbium/ytterbium for UC activation seems preferable because YNbO4 has low phonon energy, is both chemically and thermally stable as a host material, with a fairly simple synthesis, while Er3+ as an activator has a suitable energy level spacing and can be excited by several IR wavelengths, and Yb3+ as a sensitizer has a higher probability of absorption under 980 nm excitation which can increase the energy-transfer UC [8]. In our recent study, erbium (1 at. %) and ytterbium (2 at. %) doped yttrium niobate (YNbO4:Er,Yb) nanocrystallites of about 31 nm were synthesized using a combustion-assisted solid-state method. Scanning electron microscopy showed uniformity of shape and particle size of several microns and no RE-dopants affecting the microstructure. Energy dispersive spectroscopy mapping confirmed the satisfactory quality of doping. Emission spectra at 980 nm excitation showed a total of 4 Er3+ emission bands from the UC process. To determine the variation of emission characteristics with temperature, the phosphor thermometry decay measurement method was used. The quality and potential of YNbO4:Er,Yb as a temperature sensor was quite good as the relative sensitivity decreased from 0.2% to 0.09% K-1 by varying the temperature from 300 to 600K.
PB  - Belgrade : Society for science development of Serbia
C3  - SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts
T1  - Rare earth doped niobates for UC luminescence applications
SP  - I-2
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13235
ER  - 

@conference{
author = "Ivetić, Tamara and Banjac, Boris and Đačanin Far, Ljubica and Ristić, Zoran",
year = "2023",
abstract = "Oxide compounds of the niobate type with the composition ANbO4 (A = Lu, Y, La, Gd) have promising properties as inorganic luminescence host materials [1-5]. The luminescence process of converting lower-energy, long-wavelength NIR light into higher-energy UV or VIS light, known as the luminescence up-conversion (UC) phenomenon, finds wide application in optical and sensor devices and bio-medical imaging and therapy [6]. The UC of rare-earth (RE)-based materials appears mainly through excited-state absorption, energy-transfer upconversion, and photon avalanche mechanisms, the latter of which is rarely found. Niobates ANbO4 (A = Lu, Y, La, Gd) show energy-transfer UC luminescence when doped with Er3+, Ho3+, and Tm3+ ions as activators and often co-doped with Yb3+ ions as sensitizers [7]. The choice of yttrium niobate (YNbO4) as the matrix and rare-earth ions of erbium/ytterbium for UC activation seems preferable because YNbO4 has low phonon energy, is both chemically and thermally stable as a host material, with a fairly simple synthesis, while Er3+ as an activator has a suitable energy level spacing and can be excited by several IR wavelengths, and Yb3+ as a sensitizer has a higher probability of absorption under 980 nm excitation which can increase the energy-transfer UC [8]. In our recent study, erbium (1 at. %) and ytterbium (2 at. %) doped yttrium niobate (YNbO4:Er,Yb) nanocrystallites of about 31 nm were synthesized using a combustion-assisted solid-state method. Scanning electron microscopy showed uniformity of shape and particle size of several microns and no RE-dopants affecting the microstructure. Energy dispersive spectroscopy mapping confirmed the satisfactory quality of doping. Emission spectra at 980 nm excitation showed a total of 4 Er3+ emission bands from the UC process. To determine the variation of emission characteristics with temperature, the phosphor thermometry decay measurement method was used. The quality and potential of YNbO4:Er,Yb as a temperature sensor was quite good as the relative sensitivity decreased from 0.2% to 0.09% K-1 by varying the temperature from 300 to 600K.",
publisher = "Belgrade : Society for science development of Serbia",
journal = "SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts",
title = "Rare earth doped niobates for UC luminescence applications",
pages = "I-2",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13235"
}

Ivetić, T., Banjac, B., Đačanin Far, L.,& Ristić, Z.. (2023). Rare earth doped niobates for UC luminescence applications. in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts
Belgrade : Society for science development of Serbia., I-2.
https://hdl.handle.net/21.15107/rcub_vinar_13235

Ivetić T, Banjac B, Đačanin Far L, Ristić Z. Rare earth doped niobates for UC luminescence applications. in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts. 2023;:I-2.
https://hdl.handle.net/21.15107/rcub_vinar_13235 .

Ivetić, Tamara, Banjac, Boris, Đačanin Far, Ljubica, Ristić, Zoran, "Rare earth doped niobates for UC luminescence applications" in SCOM 2023 : The 2nd Serbian Conference on Materials Application and Technology : Book of abstracts (2023):I-2,
https://hdl.handle.net/21.15107/rcub_vinar_13235 .

TY  - JOUR
AU  - Đačanin Far, Ljubica
AU  - Ćirić, Aleksandar
AU  - Sekulić, Milica
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10551
AB  - YNbO4:xEu3+ powders (0.1, 0.25, 0.5, 0.75, 1, 3, 5, 7.5, 10, 15, 20 mol %) were synthesized by a solid-state reaction, after homogenization in a vibrational mill. All the samples crystallize in a monoclinic Fergusonite-beta-(Y) structure (C2/c space group), with 45–65 nm crystallite sizes and show a strong orange/red luminescence with 5D0 excited state lifetimes of around 0.6 ms. Photoluminescence emission spectra showed no concentration quenching within the examined concentration range. Judd–Ofelt intensity parameters show a slight increase with rising concentration, up to Ω2 = 8.13∙10−20 cm2, Ω4 = 2.67∙10−20 cm2, and Ω6 is concentration invariant with the 0.35∙10−20 cm2 value. Emission lifetimes of the 5D0 state are almost constant with ∼0.6 ms, and a slight decrease is observed with the highest concentrations. The intrinsic quantum yield of all the samples is about 0.5.
T2  - Optik
T1  - Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations
VL  - 272
SP  - 170398
DO  - 10.1016/j.ijleo.2022.170398
ER  - 

@article{
author = "Đačanin Far, Ljubica and Ćirić, Aleksandar and Sekulić, Milica and Periša, Jovana and Ristić, Zoran and Antić, Željka and Dramićanin, Miroslav",
year = "2023",
abstract = "YNbO4:xEu3+ powders (0.1, 0.25, 0.5, 0.75, 1, 3, 5, 7.5, 10, 15, 20 mol %) were synthesized by a solid-state reaction, after homogenization in a vibrational mill. All the samples crystallize in a monoclinic Fergusonite-beta-(Y) structure (C2/c space group), with 45–65 nm crystallite sizes and show a strong orange/red luminescence with 5D0 excited state lifetimes of around 0.6 ms. Photoluminescence emission spectra showed no concentration quenching within the examined concentration range. Judd–Ofelt intensity parameters show a slight increase with rising concentration, up to Ω2 = 8.13∙10−20 cm2, Ω4 = 2.67∙10−20 cm2, and Ω6 is concentration invariant with the 0.35∙10−20 cm2 value. Emission lifetimes of the 5D0 state are almost constant with ∼0.6 ms, and a slight decrease is observed with the highest concentrations. The intrinsic quantum yield of all the samples is about 0.5.",
journal = "Optik",
title = "Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations",
volume = "272",
pages = "170398",
doi = "10.1016/j.ijleo.2022.170398"
}

Đačanin Far, L., Ćirić, A., Sekulić, M., Periša, J., Ristić, Z., Antić, Ž.,& Dramićanin, M.. (2023). Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations. in Optik, 272, 170398.
https://doi.org/10.1016/j.ijleo.2022.170398

Đačanin Far L, Ćirić A, Sekulić M, Periša J, Ristić Z, Antić Ž, Dramićanin M. Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations. in Optik. 2023;272:170398.
doi:10.1016/j.ijleo.2022.170398 .

Đačanin Far, Ljubica, Ćirić, Aleksandar, Sekulić, Milica, Periša, Jovana, Ristić, Zoran, Antić, Željka, Dramićanin, Miroslav, "Judd-Ofelt description of radiative properties of YNbO4 activated with different Eu3+ concentrations" in Optik, 272 (2023):170398,
https://doi.org/10.1016/j.ijleo.2022.170398 . .

TY  - JOUR
AU  - Racu, Andrei V.
AU  - Ristić, Zoran
AU  - Ćirić, Aleksandar
AU  - Ðorđević, Vesna
AU  - Buse, Gabriel
AU  - Poienar, Maria
AU  - Gutmann, Michael J.
AU  - Ivashko, Oleh
AU  - Stef, Marius
AU  - Vizman, Daniel
AU  - Dramićanin, Miroslav
AU  - Piasecki, Michal
AU  - Brik, Mikhail G.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10561
AB  - The understanding of complex relationships between luminescent properties, local symmetry of an emitting center, and the host crystal structure provides a better insight into optical properties of materials. In this work, the alkaline earths CaF2 and BaF2 fluoride crystals doped with 0.1 mol% ErF3 were investigated. The crystals structure has been studied using a synchrotron and laboratory X-ray diffraction. The C3v and C4v sites symmetry were determined using erbium probed high resolution emission spectroscopy (HRPL) at low temperature (LT) of 10 K. The considerable difference in room temperature (RT) optical properties for CaF2 compared to BaF2 crystals was observed. Such difference in absorption intensity of 4.7 times of erbium 4G11/2 manifold in UV, and 7.5 times in green emission from 4S3/2 manifold, could be due to the distinction in the host crystals cationic radius (ΔrCa,Ba) and the dopant-host ionic radius (ΔrCa-Er, ΔrBa-Er). Those Δr differences influence the structure and lead to the following symmetry formation: In CaF2, the C4v and C3v isolated centers were identified, with the determined Er3+- F−i bond lengths of 2.734 Å and 4.735 Å respectively; In BaF2, only C3v isolated centers were identified with the determined Er3+- F−i bond lengths of 5.380 Å. The present work is the first study that takes into account correlations of optical properties, the local symmetry and the structure in mentioned fluorides crystals, and it could be a step forward in the lanthanide doped optical materials systematics.
T2  - Optical Materials
T1  - Analysis of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy
VL  - 136
SP  - 113337
DO  - 10.1016/j.optmat.2022.113337
ER  - 

@article{
author = "Racu, Andrei V. and Ristić, Zoran and Ćirić, Aleksandar and Ðorđević, Vesna and Buse, Gabriel and Poienar, Maria and Gutmann, Michael J. and Ivashko, Oleh and Stef, Marius and Vizman, Daniel and Dramićanin, Miroslav and Piasecki, Michal and Brik, Mikhail G.",
year = "2023",
abstract = "The understanding of complex relationships between luminescent properties, local symmetry of an emitting center, and the host crystal structure provides a better insight into optical properties of materials. In this work, the alkaline earths CaF2 and BaF2 fluoride crystals doped with 0.1 mol% ErF3 were investigated. The crystals structure has been studied using a synchrotron and laboratory X-ray diffraction. The C3v and C4v sites symmetry were determined using erbium probed high resolution emission spectroscopy (HRPL) at low temperature (LT) of 10 K. The considerable difference in room temperature (RT) optical properties for CaF2 compared to BaF2 crystals was observed. Such difference in absorption intensity of 4.7 times of erbium 4G11/2 manifold in UV, and 7.5 times in green emission from 4S3/2 manifold, could be due to the distinction in the host crystals cationic radius (ΔrCa,Ba) and the dopant-host ionic radius (ΔrCa-Er, ΔrBa-Er). Those Δr differences influence the structure and lead to the following symmetry formation: In CaF2, the C4v and C3v isolated centers were identified, with the determined Er3+- F−i bond lengths of 2.734 Å and 4.735 Å respectively; In BaF2, only C3v isolated centers were identified with the determined Er3+- F−i bond lengths of 5.380 Å. The present work is the first study that takes into account correlations of optical properties, the local symmetry and the structure in mentioned fluorides crystals, and it could be a step forward in the lanthanide doped optical materials systematics.",
journal = "Optical Materials",
title = "Analysis of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy",
volume = "136",
pages = "113337",
doi = "10.1016/j.optmat.2022.113337"
}

Racu, A. V., Ristić, Z., Ćirić, A., Ðorđević, V., Buse, G., Poienar, M., Gutmann, M. J., Ivashko, O., Stef, M., Vizman, D., Dramićanin, M., Piasecki, M.,& Brik, M. G.. (2023). Analysis of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy. in Optical Materials, 136, 113337.
https://doi.org/10.1016/j.optmat.2022.113337

Racu AV, Ristić Z, Ćirić A, Ðorđević V, Buse G, Poienar M, Gutmann MJ, Ivashko O, Stef M, Vizman D, Dramićanin M, Piasecki M, Brik MG. Analysis of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy. in Optical Materials. 2023;136:113337.
doi:10.1016/j.optmat.2022.113337 .

Racu, Andrei V., Ristić, Zoran, Ćirić, Aleksandar, Ðorđević, Vesna, Buse, Gabriel, Poienar, Maria, Gutmann, Michael J., Ivashko, Oleh, Stef, Marius, Vizman, Daniel, Dramićanin, Miroslav, Piasecki, Michal, Brik, Mikhail G., "Analysis of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy" in Optical Materials, 136 (2023):113337,
https://doi.org/10.1016/j.optmat.2022.113337 . .

TY  - JOUR
AU  - Milićević, Bojana R.
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Milenković, Katarina
AU  - Antić, Željka
AU  - Smits, Krisjanis
AU  - Kemere, Meldra
AU  - Vitols, Kaspars
AU  - Sarakovskis, Anatolijs
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10590
AB  - We report the procedure for hydrothermal synthesis of ultrasmall Yb3+/Tm3+ co-doped Sr2LaF7 (SLF) upconversion phosphors. These phosphors were synthesized by varying the concentrations of Yb3+ (x = 10, 15, 20, and 25 mol%) and Tm3+ (y = 0.75, 1, 2, and 3 mol%) with the aim to analyze their emissions in the near IR spectral range. According to the detailed structural analysis, Yb3+ and Tm3+ occupy the La3+ sites in the SLF host. The addition of Yb3+/Tm3+ ions has a huge impact on the lattice constant, particle size, and PL emission properties of the synthesized SLF nanophosphor. The results show that the optimal dopant concentrations for upconversion luminescence of Yb3+/Tm3+ co-doped SLF are 20 mol% Yb3+ and 1 mol% Tm3+ with EDTA as the chelating agent. Under 980 nm light excitation, a strong upconversion emission of Tm3+ ions around 800 nm was achieved. In addition, the experimental photoluminescence lifetime of Tm3+ emission in the SLF host is reported. This study discovered that efficient near IR emission from ultrasmall Yb3+/Tm3+ co-doped SLF phosphors may have potential applications in the fields of fluorescent labels in bioimaging and security applications.
T2  - Nanomaterials
T1  - Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles
VL  - 13
IS  - 1
SP  - 30
DO  - 10.3390/nano13010030
ER  - 

@article{
author = "Milićević, Bojana R. and Periša, Jovana and Ristić, Zoran and Milenković, Katarina and Antić, Željka and Smits, Krisjanis and Kemere, Meldra and Vitols, Kaspars and Sarakovskis, Anatolijs and Dramićanin, Miroslav",
year = "2023",
abstract = "We report the procedure for hydrothermal synthesis of ultrasmall Yb3+/Tm3+ co-doped Sr2LaF7 (SLF) upconversion phosphors. These phosphors were synthesized by varying the concentrations of Yb3+ (x = 10, 15, 20, and 25 mol%) and Tm3+ (y = 0.75, 1, 2, and 3 mol%) with the aim to analyze their emissions in the near IR spectral range. According to the detailed structural analysis, Yb3+ and Tm3+ occupy the La3+ sites in the SLF host. The addition of Yb3+/Tm3+ ions has a huge impact on the lattice constant, particle size, and PL emission properties of the synthesized SLF nanophosphor. The results show that the optimal dopant concentrations for upconversion luminescence of Yb3+/Tm3+ co-doped SLF are 20 mol% Yb3+ and 1 mol% Tm3+ with EDTA as the chelating agent. Under 980 nm light excitation, a strong upconversion emission of Tm3+ ions around 800 nm was achieved. In addition, the experimental photoluminescence lifetime of Tm3+ emission in the SLF host is reported. This study discovered that efficient near IR emission from ultrasmall Yb3+/Tm3+ co-doped SLF phosphors may have potential applications in the fields of fluorescent labels in bioimaging and security applications.",
journal = "Nanomaterials",
title = "Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles",
volume = "13",
number = "1",
pages = "30",
doi = "10.3390/nano13010030"
}

Milićević, B. R., Periša, J., Ristić, Z., Milenković, K., Antić, Ž., Smits, K., Kemere, M., Vitols, K., Sarakovskis, A.,& Dramićanin, M.. (2023). Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles. in Nanomaterials, 13(1), 30.
https://doi.org/10.3390/nano13010030

Milićević BR, Periša J, Ristić Z, Milenković K, Antić Ž, Smits K, Kemere M, Vitols K, Sarakovskis A, Dramićanin M. Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles. in Nanomaterials. 2023;13(1):30.
doi:10.3390/nano13010030 .

Milićević, Bojana R., Periša, Jovana, Ristić, Zoran, Milenković, Katarina, Antić, Željka, Smits, Krisjanis, Kemere, Meldra, Vitols, Kaspars, Sarakovskis, Anatolijs, Dramićanin, Miroslav, "Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles" in Nanomaterials, 13, no. 1 (2023):30,
https://doi.org/10.3390/nano13010030 . .

TY  - JOUR
AU  - Alrebdi, Tahani A.
AU  - Alodhayb, Abdullah N.
AU  - Ristić, Zoran
AU  - Dramićanin, Miroslav
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10931
AB  - Herein, we investigate the performance of single- and multiparametric luminescence thermometry founded on the temperature-dependent spectral features of Ca6BaP4O17:Mn5+ near-infrared emission. The material was prepared by a conventional steady-state synthesis, and its photoluminescence emission was measured from 7500 to 10,000 cm−1 over the 293–373 K temperature range in 5 K increments. The spectra are composed of the emissions from 1E → 3A2 and 3T2 → 3A2 electronic transitions and Stokes and anti-Stokes vibronic sidebands at 320 cm−1 and 800 cm−1 from the maximum of 1E → 3A2 emission. Upon temperature increase, the 3T2 and Stokes bands gained in intensity while the maximum of 1E emission band is redshifted. We introduced the procedure for the linearization and feature scaling of input variables for linear multiparametric regression. Then, we experimentally determined accuracies and precisions of the luminescence thermometry based on luminescence intensity ratios between emissions from the 1E and 3T2 states, between Stokes and anti-Stokes emission sidebands, and at the 1E energy maximum. The multiparametric luminescence thermometry involving the same spectral features showed similar performance, comparable to the best single-parameter thermometry.
T2  - Sensors
T1  - Comparison of Performance between Single- and Multiparameter Luminescence Thermometry Methods Based on the Mn5+ Near-Infrared Emission
VL  - 23
IS  - 8
SP  - 3839
DO  - 10.3390/s23083839
ER  - 

@article{
author = "Alrebdi, Tahani A. and Alodhayb, Abdullah N. and Ristić, Zoran and Dramićanin, Miroslav",
year = "2023",
abstract = "Herein, we investigate the performance of single- and multiparametric luminescence thermometry founded on the temperature-dependent spectral features of Ca6BaP4O17:Mn5+ near-infrared emission. The material was prepared by a conventional steady-state synthesis, and its photoluminescence emission was measured from 7500 to 10,000 cm−1 over the 293–373 K temperature range in 5 K increments. The spectra are composed of the emissions from 1E → 3A2 and 3T2 → 3A2 electronic transitions and Stokes and anti-Stokes vibronic sidebands at 320 cm−1 and 800 cm−1 from the maximum of 1E → 3A2 emission. Upon temperature increase, the 3T2 and Stokes bands gained in intensity while the maximum of 1E emission band is redshifted. We introduced the procedure for the linearization and feature scaling of input variables for linear multiparametric regression. Then, we experimentally determined accuracies and precisions of the luminescence thermometry based on luminescence intensity ratios between emissions from the 1E and 3T2 states, between Stokes and anti-Stokes emission sidebands, and at the 1E energy maximum. The multiparametric luminescence thermometry involving the same spectral features showed similar performance, comparable to the best single-parameter thermometry.",
journal = "Sensors",
title = "Comparison of Performance between Single- and Multiparameter Luminescence Thermometry Methods Based on the Mn5+ Near-Infrared Emission",
volume = "23",
number = "8",
pages = "3839",
doi = "10.3390/s23083839"
}

Alrebdi, T. A., Alodhayb, A. N., Ristić, Z.,& Dramićanin, M.. (2023). Comparison of Performance between Single- and Multiparameter Luminescence Thermometry Methods Based on the Mn5+ Near-Infrared Emission. in Sensors, 23(8), 3839.
https://doi.org/10.3390/s23083839

Alrebdi TA, Alodhayb AN, Ristić Z, Dramićanin M. Comparison of Performance between Single- and Multiparameter Luminescence Thermometry Methods Based on the Mn5+ Near-Infrared Emission. in Sensors. 2023;23(8):3839.
doi:10.3390/s23083839 .

Alrebdi, Tahani A., Alodhayb, Abdullah N., Ristić, Zoran, Dramićanin, Miroslav, "Comparison of Performance between Single- and Multiparameter Luminescence Thermometry Methods Based on the Mn5+ Near-Infrared Emission" in Sensors, 23, no. 8 (2023):3839,
https://doi.org/10.3390/s23083839 . .

TY  - JOUR
AU  - Đačanin Far, Ljubica
AU  - Zeković, Ivana
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Alodhayb, Abdullah
AU  - Dramićanin, Miroslav
AU  - Antić, Željka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11339
AB  - Luminescent Eu3+-doped SrF2 nanoparticles were synthesized using microwave-assisted synthesis. Their surfaces were modified either by polyethylene glycol or mercaptopropionic acid to enhance their dispersibility in aqueous media and colloidal formation. X-ray diffraction analysis confirmed single-phase cubic structure in both types of hydrophilic-modified Sr0.9Eu0.1F2 luminescent powders. The average crystallite size of nanoparticles is found to be ∼13 nm. Scanning electron microscopy of the representative PEG2000-modified sample revealed that particles form agglomerates composed of densely packed nanoparticles. The microstructure at a local level was investigated by transmission electron microscopy showing the presence of sphere-like nanoparticles with an average particle size of 12.5 nm and 14 nm for PEG-modified and MPA-modified Sr0.9Eu0.1F2, respectively. Both PEG2000 and MPA-modified Sr0.9Eu0.1F2 water dispersions show strong red Eu3+ emission under 405 nm excitation that is quenched in the presence of the primary NP fertilizer, ammonium dihydrogen phosphate, NH4H2PO4. The limit of detection was calculated to be ∼19 mM for both hydrophilic-modified Sr0.9Eu0.1F2 luminescent nanoparticles.
T2  - Optical Materials
T1  - Luminescent Eu3+ doped SrF2 nanoparticles for fluorescent detection of fertilizers
VL  - 142
SP  - 114061
DO  - 10.1016/j.optmat.2023.114061
ER  - 

@article{
author = "Đačanin Far, Ljubica and Zeković, Ivana and Periša, Jovana and Ristić, Zoran and Alodhayb, Abdullah and Dramićanin, Miroslav and Antić, Željka",
year = "2023",
abstract = "Luminescent Eu3+-doped SrF2 nanoparticles were synthesized using microwave-assisted synthesis. Their surfaces were modified either by polyethylene glycol or mercaptopropionic acid to enhance their dispersibility in aqueous media and colloidal formation. X-ray diffraction analysis confirmed single-phase cubic structure in both types of hydrophilic-modified Sr0.9Eu0.1F2 luminescent powders. The average crystallite size of nanoparticles is found to be ∼13 nm. Scanning electron microscopy of the representative PEG2000-modified sample revealed that particles form agglomerates composed of densely packed nanoparticles. The microstructure at a local level was investigated by transmission electron microscopy showing the presence of sphere-like nanoparticles with an average particle size of 12.5 nm and 14 nm for PEG-modified and MPA-modified Sr0.9Eu0.1F2, respectively. Both PEG2000 and MPA-modified Sr0.9Eu0.1F2 water dispersions show strong red Eu3+ emission under 405 nm excitation that is quenched in the presence of the primary NP fertilizer, ammonium dihydrogen phosphate, NH4H2PO4. The limit of detection was calculated to be ∼19 mM for both hydrophilic-modified Sr0.9Eu0.1F2 luminescent nanoparticles.",
journal = "Optical Materials",
title = "Luminescent Eu3+ doped SrF2 nanoparticles for fluorescent detection of fertilizers",
volume = "142",
pages = "114061",
doi = "10.1016/j.optmat.2023.114061"
}

Đačanin Far, L., Zeković, I., Periša, J., Ristić, Z., Alodhayb, A., Dramićanin, M.,& Antić, Ž.. (2023). Luminescent Eu3+ doped SrF2 nanoparticles for fluorescent detection of fertilizers. in Optical Materials, 142, 114061.
https://doi.org/10.1016/j.optmat.2023.114061

Đačanin Far L, Zeković I, Periša J, Ristić Z, Alodhayb A, Dramićanin M, Antić Ž. Luminescent Eu3+ doped SrF2 nanoparticles for fluorescent detection of fertilizers. in Optical Materials. 2023;142:114061.
doi:10.1016/j.optmat.2023.114061 .

Đačanin Far, Ljubica, Zeković, Ivana, Periša, Jovana, Ristić, Zoran, Alodhayb, Abdullah, Dramićanin, Miroslav, Antić, Željka, "Luminescent Eu3+ doped SrF2 nanoparticles for fluorescent detection of fertilizers" in Optical Materials, 142 (2023):114061,
https://doi.org/10.1016/j.optmat.2023.114061 . .

TY  - JOUR
AU  - Martinović, Ana
AU  - Milićević, Bojana
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Stojadinović, Stevan
AU  - Dramićanin, Miroslav
AU  - Ćirić, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11361
AB  - Luminescence thermometry uses temperature-dependent emission of light for remote sensing. Dy3+ is established as a perspective ion for high-temperature probes, but given that there is an infinite number of potential hosts it is impossible to find conventionally the one with the best performance. Judd-Ofelt thermometric model can predict sensitivities but it was not yet experimentally validated on Dy3+ ion. Pure phase CaYAlO4:Dy3+ powder was synthesized via the modified Pechini method. Photoluminescence spectra were taken from 300 to 600 K. Luminescence intensity ratio was estimated using 4 I15/2 and 4 F9/2 levels. Experimentally obtained thermometric parameters and sensitivities showed an excellent matching with those obtained from the Judd-Ofelt, indicating the potential application of the Judd-Ofelt model for fast assessment of Dy3+-doped luminescent sensor thermometric perspective. The maximum absolute and relative sensitivities are ~0.001 K− 1 at 600 K and ~1.4% K− 1 at 300 K, respectively. The optimum temperature range for the CaYAlO4:Dy3+ probe is from 370 to 616 K.
T2  - Physica B: Condensed Matter
T1  - Thermometric Judd-Ofelt model for Dy3+ ion tested in CaYAlO4 host and evaluation of its sensing performances for luminescence thermometry
VL  - 666
SP  - 415096
DO  - 10.1016/j.physb.2023.415096
ER  - 

@article{
author = "Martinović, Ana and Milićević, Bojana and Periša, Jovana and Ristić, Zoran and Stojadinović, Stevan and Dramićanin, Miroslav and Ćirić, Aleksandar",
year = "2023",
abstract = "Luminescence thermometry uses temperature-dependent emission of light for remote sensing. Dy3+ is established as a perspective ion for high-temperature probes, but given that there is an infinite number of potential hosts it is impossible to find conventionally the one with the best performance. Judd-Ofelt thermometric model can predict sensitivities but it was not yet experimentally validated on Dy3+ ion. Pure phase CaYAlO4:Dy3+ powder was synthesized via the modified Pechini method. Photoluminescence spectra were taken from 300 to 600 K. Luminescence intensity ratio was estimated using 4 I15/2 and 4 F9/2 levels. Experimentally obtained thermometric parameters and sensitivities showed an excellent matching with those obtained from the Judd-Ofelt, indicating the potential application of the Judd-Ofelt model for fast assessment of Dy3+-doped luminescent sensor thermometric perspective. The maximum absolute and relative sensitivities are ~0.001 K− 1 at 600 K and ~1.4% K− 1 at 300 K, respectively. The optimum temperature range for the CaYAlO4:Dy3+ probe is from 370 to 616 K.",
journal = "Physica B: Condensed Matter",
title = "Thermometric Judd-Ofelt model for Dy3+ ion tested in CaYAlO4 host and evaluation of its sensing performances for luminescence thermometry",
volume = "666",
pages = "415096",
doi = "10.1016/j.physb.2023.415096"
}

Martinović, A., Milićević, B., Periša, J., Ristić, Z., Stojadinović, S., Dramićanin, M.,& Ćirić, A.. (2023). Thermometric Judd-Ofelt model for Dy3+ ion tested in CaYAlO4 host and evaluation of its sensing performances for luminescence thermometry. in Physica B: Condensed Matter, 666, 415096.
https://doi.org/10.1016/j.physb.2023.415096

Martinović A, Milićević B, Periša J, Ristić Z, Stojadinović S, Dramićanin M, Ćirić A. Thermometric Judd-Ofelt model for Dy3+ ion tested in CaYAlO4 host and evaluation of its sensing performances for luminescence thermometry. in Physica B: Condensed Matter. 2023;666:415096.
doi:10.1016/j.physb.2023.415096 .

Martinović, Ana, Milićević, Bojana, Periša, Jovana, Ristić, Zoran, Stojadinović, Stevan, Dramićanin, Miroslav, Ćirić, Aleksandar, "Thermometric Judd-Ofelt model for Dy3+ ion tested in CaYAlO4 host and evaluation of its sensing performances for luminescence thermometry" in Physica B: Condensed Matter, 666 (2023):415096,
https://doi.org/10.1016/j.physb.2023.415096 . .

TY  - JOUR
AU  - Antić, Željka
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Srivastava, A.M.
AU  - Beers, W.W.
AU  - Dramićanin, Miroslav
AU  - Brik, Mikhail G.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11576
AB  - The importance of structural disorder of crystal lattice for the formation of the optical properties of impurity ions is studied by evaluating the optical properties of Cr3+ impurity ions in Mg1-xZnxAl2O4:Cr3+ (x = 0; 0.25; 0.50; 0.75; 1.0) spinel solid solutions. It is demonstrated that the gradual replacement of Zn by Mg, which transforms the normal spinel ZnAl2O4 into the inverse spinel MgAl2O4, leads to an enhancement of the Cr3+ red emission. In addition, the Cr3+ decay rate (inverse to the emitting excited state lifetime) increases linearly when Zn is gradually replaced by Mg. These observations are explained by the lifting of the parity selection rule due to the random distribution of the Zn and Mg cations in the second coordination sphere around the emitting ion, which lowers the local symmetry at the impurity ion site. The strategy of deliberately creating disorder in the crystalline lattice is a successful way of increasing brightness and decreasing the excited state lifetime of the impurity ions, which can be applied for improving emission properties of the phosphor materials used in solid state lighting.
T2  - Journal of Luminescence
T1  - Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure
VL  - 264
SP  - 120190
DO  - 10.1016/j.jlumin.2023.120190
ER  - 

@article{
author = "Antić, Željka and Đorđević, Vesna R. and Ristić, Zoran and Srivastava, A.M. and Beers, W.W. and Dramićanin, Miroslav and Brik, Mikhail G.",
year = "2023",
abstract = "The importance of structural disorder of crystal lattice for the formation of the optical properties of impurity ions is studied by evaluating the optical properties of Cr3+ impurity ions in Mg1-xZnxAl2O4:Cr3+ (x = 0; 0.25; 0.50; 0.75; 1.0) spinel solid solutions. It is demonstrated that the gradual replacement of Zn by Mg, which transforms the normal spinel ZnAl2O4 into the inverse spinel MgAl2O4, leads to an enhancement of the Cr3+ red emission. In addition, the Cr3+ decay rate (inverse to the emitting excited state lifetime) increases linearly when Zn is gradually replaced by Mg. These observations are explained by the lifting of the parity selection rule due to the random distribution of the Zn and Mg cations in the second coordination sphere around the emitting ion, which lowers the local symmetry at the impurity ion site. The strategy of deliberately creating disorder in the crystalline lattice is a successful way of increasing brightness and decreasing the excited state lifetime of the impurity ions, which can be applied for improving emission properties of the phosphor materials used in solid state lighting.",
journal = "Journal of Luminescence",
title = "Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure",
volume = "264",
pages = "120190",
doi = "10.1016/j.jlumin.2023.120190"
}

Antić, Ž., Đorđević, V. R., Ristić, Z., Srivastava, A.M., Beers, W.W., Dramićanin, M.,& Brik, M. G.. (2023). Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure. in Journal of Luminescence, 264, 120190.
https://doi.org/10.1016/j.jlumin.2023.120190

Antić Ž, Đorđević VR, Ristić Z, Srivastava A, Beers W, Dramićanin M, Brik MG. Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure. in Journal of Luminescence. 2023;264:120190.
doi:10.1016/j.jlumin.2023.120190 .

Antić, Željka, Đorđević, Vesna R., Ristić, Zoran, Srivastava, A.M., Beers, W.W., Dramićanin, Miroslav, Brik, Mikhail G., "Influence of composition on the emission properties of impurities in solids: Case study of Mg1-xZnxAl2O4:Cr3+ with the spinel structure" in Journal of Luminescence, 264 (2023):120190,
https://doi.org/10.1016/j.jlumin.2023.120190 . .

TY  - CONF
AU  - Periša, Jovana
AU  - Ćirić, Aleksandar
AU  - Ristić, Zoran
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13233
AB  - Temperature sensing from the photoluminescence of MgAl2O4:Cr3+ powder is systematically examined and presented. The material was prepared by the self-propagating high-temperature synthesis method and its structure was confirmed by X-ray diffraction analysis. In this host, Cr3+ ions are in a strong crystal field, so the overlapping emissions from 2E and 4T2 energy levels are observed. Emission and excitation spectra were recorded in the 300 - 540 K temperature range. The broad photoluminescence attributed to 4T2→4A2 transition increases in intensity with an increase in temperature on account of 2E→4A2 emission intensity until 460 K when both emissions start quenching. The emissions were separated by deconvolution at each temperature and used for the luminescence intensity ratio temperature readout method. The obtained relative sensitivity displayed high values in the physiological range, from 3.5 %K-1 at 300 K to 2.9 %K-1 at 330 K, above 2 %K-1 below 400 K, and above 1 %K-1 between 400 K and 540 K.
PB  - Belgrade : Society for science development of Serbia
C3  - ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
T1  - MgAl2O4:Cr3+ probe for luminescence thermometry in the physiological temperatures range
SP  - P-31
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13233
ER  - 

@conference{
author = "Periša, Jovana and Ćirić, Aleksandar and Ristić, Zoran and Antić, Željka and Dramićanin, Miroslav",
year = "2022",
abstract = "Temperature sensing from the photoluminescence of MgAl2O4:Cr3+ powder is systematically examined and presented. The material was prepared by the self-propagating high-temperature synthesis method and its structure was confirmed by X-ray diffraction analysis. In this host, Cr3+ ions are in a strong crystal field, so the overlapping emissions from 2E and 4T2 energy levels are observed. Emission and excitation spectra were recorded in the 300 - 540 K temperature range. The broad photoluminescence attributed to 4T2→4A2 transition increases in intensity with an increase in temperature on account of 2E→4A2 emission intensity until 460 K when both emissions start quenching. The emissions were separated by deconvolution at each temperature and used for the luminescence intensity ratio temperature readout method. The obtained relative sensitivity displayed high values in the physiological range, from 3.5 %K-1 at 300 K to 2.9 %K-1 at 330 K, above 2 %K-1 below 400 K, and above 1 %K-1 between 400 K and 540 K.",
publisher = "Belgrade : Society for science development of Serbia",
journal = "ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts",
title = "MgAl2O4:Cr3+ probe for luminescence thermometry in the physiological temperatures range",
pages = "P-31",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13233"
}

Periša, J., Ćirić, A., Ristić, Z., Antić, Ž.,& Dramićanin, M.. (2022). MgAl2O4:Cr3+ probe for luminescence thermometry in the physiological temperatures range. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
Belgrade : Society for science development of Serbia., P-31.
https://hdl.handle.net/21.15107/rcub_vinar_13233

Periša J, Ćirić A, Ristić Z, Antić Ž, Dramićanin M. MgAl2O4:Cr3+ probe for luminescence thermometry in the physiological temperatures range. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts. 2022;:P-31.
https://hdl.handle.net/21.15107/rcub_vinar_13233 .

Periša, Jovana, Ćirić, Aleksandar, Ristić, Zoran, Antić, Željka, Dramićanin, Miroslav, "MgAl2O4:Cr3+ probe for luminescence thermometry in the physiological temperatures range" in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts (2022):P-31,
https://hdl.handle.net/21.15107/rcub_vinar_13233 .

TY  - CONF
AU  - Kuzman, Sanja
AU  - Ristić, Zoran
AU  - Antić, Željka
AU  - Đačanin Far, Ljubica
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11340
AB  - The Mn5+-activated Ca6Ba(PO4)4O phosphor is described in this paper as a versatile nearinfrared luminescence thermometry probe in a physiological temperature range. It is focused on several steady-state approaches to luminescence thermometry operating entirely in the first (excitation ex=635 nm) and the second (emission) biological transparency windows. This material was synthesized by a solid-state reaction using CaCO3, BaCO3, (NH4)H2PO4 and MnO as precursor materials. Starting chemicals were thoroughly mixed in an agate mortar for 1 hour with an appropriate amount of etanol. A mixture of the raw materials was heated at 600⁰C for 6 hours, ground in an agate mortar, and further calcinated at 1280⁰C for 10h. The exploited features of Ca6Ba(PO4)4O:Mn5+ emission spectra were (Figure 1): i) luminescence intensity ratio (LIR) between spin-allowed 3T2 → 3A2 and spin forbidden 1E → 3A2 (Sr MAX=2.04%K-1 @ 20 oC, dT<0.36 K); ii) LIR between Stokes peak corresponding to the bending deformation vibronic mode (O-Mn-O) and spin forbidden 1E → 3A2 (Sr MAX=0.57 %K-1 @ 100 oC, dT<2 K above 50 oC); iii) LIR between Stokes and Anti-Stokes peaks corresponding to the bending deformation vibronic mode (O-Mn-O) (Sr MAX=0.52 %K-1 @ 100 oC, dT3 K); iv) red-shift of the position of the 1E → 3A2 peak (Sa=0.21 cm-1K -1, dT<0.33 K) and v) the broadening of the full with at half maximum (FWHM) of the same peak with the temperature increase (Sr MAX=0.34 %K-1 @ 100 oC, dT<0.38 K). The steady-state approach facilitated quick measurements of emission spectra and, consequently, a large number of acquired spectra (50) for each temperature point, which were used to experimentally determine the temperature resolution for each thermometry method.
PB  - Belgrade : Society for science development of Serbia
C3  - ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
T1  - Multiple temperature readings from Ca6Ba(PO4)4O:Mn5+ steady-state nearinfrared emission in a physiological temperature range
SP  - P-34
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11340
ER  - 

@conference{
author = "Kuzman, Sanja and Ristić, Zoran and Antić, Željka and Đačanin Far, Ljubica and Dramićanin, Miroslav",
year = "2022",
abstract = "The Mn5+-activated Ca6Ba(PO4)4O phosphor is described in this paper as a versatile nearinfrared luminescence thermometry probe in a physiological temperature range. It is focused on several steady-state approaches to luminescence thermometry operating entirely in the first (excitation ex=635 nm) and the second (emission) biological transparency windows. This material was synthesized by a solid-state reaction using CaCO3, BaCO3, (NH4)H2PO4 and MnO as precursor materials. Starting chemicals were thoroughly mixed in an agate mortar for 1 hour with an appropriate amount of etanol. A mixture of the raw materials was heated at 600⁰C for 6 hours, ground in an agate mortar, and further calcinated at 1280⁰C for 10h. The exploited features of Ca6Ba(PO4)4O:Mn5+ emission spectra were (Figure 1): i) luminescence intensity ratio (LIR) between spin-allowed 3T2 → 3A2 and spin forbidden 1E → 3A2 (Sr MAX=2.04%K-1 @ 20 oC, dT<0.36 K); ii) LIR between Stokes peak corresponding to the bending deformation vibronic mode (O-Mn-O) and spin forbidden 1E → 3A2 (Sr MAX=0.57 %K-1 @ 100 oC, dT<2 K above 50 oC); iii) LIR between Stokes and Anti-Stokes peaks corresponding to the bending deformation vibronic mode (O-Mn-O) (Sr MAX=0.52 %K-1 @ 100 oC, dT3 K); iv) red-shift of the position of the 1E → 3A2 peak (Sa=0.21 cm-1K -1, dT<0.33 K) and v) the broadening of the full with at half maximum (FWHM) of the same peak with the temperature increase (Sr MAX=0.34 %K-1 @ 100 oC, dT<0.38 K). The steady-state approach facilitated quick measurements of emission spectra and, consequently, a large number of acquired spectra (50) for each temperature point, which were used to experimentally determine the temperature resolution for each thermometry method.",
publisher = "Belgrade : Society for science development of Serbia",
journal = "ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts",
title = "Multiple temperature readings from Ca6Ba(PO4)4O:Mn5+ steady-state nearinfrared emission in a physiological temperature range",
pages = "P-34",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11340"
}

Kuzman, S., Ristić, Z., Antić, Ž., Đačanin Far, L.,& Dramićanin, M.. (2022). Multiple temperature readings from Ca6Ba(PO4)4O:Mn5+ steady-state nearinfrared emission in a physiological temperature range. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
Belgrade : Society for science development of Serbia., P-34.
https://hdl.handle.net/21.15107/rcub_vinar_11340

Kuzman S, Ristić Z, Antić Ž, Đačanin Far L, Dramićanin M. Multiple temperature readings from Ca6Ba(PO4)4O:Mn5+ steady-state nearinfrared emission in a physiological temperature range. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts. 2022;:P-34.
https://hdl.handle.net/21.15107/rcub_vinar_11340 .

Kuzman, Sanja, Ristić, Zoran, Antić, Željka, Đačanin Far, Ljubica, Dramićanin, Miroslav, "Multiple temperature readings from Ca6Ba(PO4)4O:Mn5+ steady-state nearinfrared emission in a physiological temperature range" in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts (2022):P-34,
https://hdl.handle.net/21.15107/rcub_vinar_11340 .

TY  - JOUR
AU  - Periša, Jovana
AU  - Đorđević, Vesna R.
AU  - Ristić, Zoran
AU  - Medić, Mina M.
AU  - Kuzman, Sanja
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10104
AB  - Potential of Eu3+, Mn4+ co-doped YAG for dual-activated luminescence intensity ratio thermometry is investigated. The samples were prepared by modified Pechini method and cubic structure confirmed by X-ray diffraction with average crystallite size of ∼ 20 nm. Scanning electron microscopy revealed different sized chunks composed of ellipsoidal-shaped particles bellow 50 nm. Temperature-dependent photoluminescent emission spectra (λex = 465 nm, 98–473 K temperature range) of co-doped samples consist of emission bands in the red spectral region originating from both Eu3+and Mn4+transitions. Concentration of Mn4+ and Eu3+ is optimized to be 0.5mol% and 3mol%. Observed suppression of Eu3+ emission indicate an efficient (∼97%) energy transfer from Eu3+ to Mn4+. Using luminescence intensity ratio as the ratio between the integrated intensities of the Eu3+ 5D0→7F1 transition and the Mn4+ 2E→4A2 manyfold, maximal absolute and relative sensitivities of SAmax = 19.2mK−1 at 351 K and SRmax = 5.06%K − 1 at 321 K were calculated.
T2  - Materials Research Bulletin
T1  - Highly sensitive temperature reading from intensity ratio of Eu3+ And Mn4+emissions in Y3Al5O12 nanocrystals
VL  - 149
SP  - 111708
DO  - 10.1016/j.materresbull.2021.111708
ER  - 

@article{
author = "Periša, Jovana and Đorđević, Vesna R. and Ristić, Zoran and Medić, Mina M. and Kuzman, Sanja and Antić, Željka and Dramićanin, Miroslav",
year = "2022",
abstract = "Potential of Eu3+, Mn4+ co-doped YAG for dual-activated luminescence intensity ratio thermometry is investigated. The samples were prepared by modified Pechini method and cubic structure confirmed by X-ray diffraction with average crystallite size of ∼ 20 nm. Scanning electron microscopy revealed different sized chunks composed of ellipsoidal-shaped particles bellow 50 nm. Temperature-dependent photoluminescent emission spectra (λex = 465 nm, 98–473 K temperature range) of co-doped samples consist of emission bands in the red spectral region originating from both Eu3+and Mn4+transitions. Concentration of Mn4+ and Eu3+ is optimized to be 0.5mol% and 3mol%. Observed suppression of Eu3+ emission indicate an efficient (∼97%) energy transfer from Eu3+ to Mn4+. Using luminescence intensity ratio as the ratio between the integrated intensities of the Eu3+ 5D0→7F1 transition and the Mn4+ 2E→4A2 manyfold, maximal absolute and relative sensitivities of SAmax = 19.2mK−1 at 351 K and SRmax = 5.06%K − 1 at 321 K were calculated.",
journal = "Materials Research Bulletin",
title = "Highly sensitive temperature reading from intensity ratio of Eu3+ And Mn4+emissions in Y3Al5O12 nanocrystals",
volume = "149",
pages = "111708",
doi = "10.1016/j.materresbull.2021.111708"
}

Periša, J., Đorđević, V. R., Ristić, Z., Medić, M. M., Kuzman, S., Antić, Ž.,& Dramićanin, M.. (2022). Highly sensitive temperature reading from intensity ratio of Eu3+ And Mn4+emissions in Y3Al5O12 nanocrystals. in Materials Research Bulletin, 149, 111708.
https://doi.org/10.1016/j.materresbull.2021.111708

Periša J, Đorđević VR, Ristić Z, Medić MM, Kuzman S, Antić Ž, Dramićanin M. Highly sensitive temperature reading from intensity ratio of Eu3+ And Mn4+emissions in Y3Al5O12 nanocrystals. in Materials Research Bulletin. 2022;149:111708.
doi:10.1016/j.materresbull.2021.111708 .

Periša, Jovana, Đorđević, Vesna R., Ristić, Zoran, Medić, Mina M., Kuzman, Sanja, Antić, Željka, Dramićanin, Miroslav, "Highly sensitive temperature reading from intensity ratio of Eu3+ And Mn4+emissions in Y3Al5O12 nanocrystals" in Materials Research Bulletin, 149 (2022):111708,
https://doi.org/10.1016/j.materresbull.2021.111708 . .

TY  - JOUR
AU  - Piotrowski, Wojciech M.
AU  - Ristić, Zoran
AU  - Dramićanin, Miroslav
AU  - Marciniak, Lukasz
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10191
AB  - Luminescence thermometry exploiting luminescence kinetics as a thermometric parameter is regarded as one of the most reliable temperature readout techniques. Transition metal ions are of particular interest in this application which is due to the possibility of modulating their spectroscopic properties by changing the strength of the crystal field of the matrix. In this work, we present a strategy to modulate the thermometric parameters including the relative sensitivity and useful temperature range of luminescent thermometers based on the lifetime of Ti3+ ions by introducing lanthanide (Ln3+) doping in SrTiO3 and CaTiO3. The mutual effect of the distortion of the local symmetry of the Ti3+ ions associated with the introduction of Ln3+ ions and/or the Ti3+ → Ln3+ energy transfer enabled relative sensitivities of SR = 5.87% K−1 at 140 K for SrTiO3:Dy3+ and SR = 4.51% K−1 at 251 K for CaTiO3:Gd3+. © 2022 The Author(s)
T2  - Journal of Alloys and Compounds
T1  - Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions
VL  - 906
SP  - 164398
DO  - 10.1016/j.jallcom.2022.164398
ER  - 

@article{
author = "Piotrowski, Wojciech M. and Ristić, Zoran and Dramićanin, Miroslav and Marciniak, Lukasz",
year = "2022",
abstract = "Luminescence thermometry exploiting luminescence kinetics as a thermometric parameter is regarded as one of the most reliable temperature readout techniques. Transition metal ions are of particular interest in this application which is due to the possibility of modulating their spectroscopic properties by changing the strength of the crystal field of the matrix. In this work, we present a strategy to modulate the thermometric parameters including the relative sensitivity and useful temperature range of luminescent thermometers based on the lifetime of Ti3+ ions by introducing lanthanide (Ln3+) doping in SrTiO3 and CaTiO3. The mutual effect of the distortion of the local symmetry of the Ti3+ ions associated with the introduction of Ln3+ ions and/or the Ti3+ → Ln3+ energy transfer enabled relative sensitivities of SR = 5.87% K−1 at 140 K for SrTiO3:Dy3+ and SR = 4.51% K−1 at 251 K for CaTiO3:Gd3+. © 2022 The Author(s)",
journal = "Journal of Alloys and Compounds",
title = "Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions",
volume = "906",
pages = "164398",
doi = "10.1016/j.jallcom.2022.164398"
}

Piotrowski, W. M., Ristić, Z., Dramićanin, M.,& Marciniak, L.. (2022). Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions. in Journal of Alloys and Compounds, 906, 164398.
https://doi.org/10.1016/j.jallcom.2022.164398

Piotrowski WM, Ristić Z, Dramićanin M, Marciniak L. Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions. in Journal of Alloys and Compounds. 2022;906:164398.
doi:10.1016/j.jallcom.2022.164398 .

Piotrowski, Wojciech M., Ristić, Zoran, Dramićanin, Miroslav, Marciniak, Lukasz, "Modification of the thermometric performance of the lifetime-based luminescent thermometer exploiting Ti3+ emission in SrTiO3 and CaTiO3 by doping with lanthanide ions" in Journal of Alloys and Compounds, 906 (2022):164398,
https://doi.org/10.1016/j.jallcom.2022.164398 . .

TY  - JOUR
AU  - Mullins, Abbi L.
AU  - Ćirić, Aleksandar
AU  - Ristić, Zoran
AU  - Williams, J. A. Gareth
AU  - Radosavjević Evans, Ivana
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10219
AB  - A series of LaGa1–xO3:Cr3+x phosphors (x = 0.002, 0.005, 0.01, 0.02, 0.04) were synthesised by solid-state reaction and structurally characterised by Rietveld refinement from powder X-ray diffraction data. Amongst the five compounds, that with x = 0.01 exhibited the highest photoluminescence quantum yield at room temperature, those with higher doping levels probably suffering from self-quenching of the luminescence. This compound was selected for study of the temperature-dependence of the optical properties. The emission spectra recorded over the range 300–600 K reveal distinct features: a broad band that initially increases with temperature, attributed to fluorescence from the 4T2 excited state, and a series of sharp peaks that monotonically decline with temperature, attributed to phosphorescence from the 2E. The thermometry capabilities of LaGa0.99O3:Cr0.01 were probed by the luminescence intensity ratio (LIR) method using the broad 4T2 band relative to the sharp 2E peaks. To overcome the difficulties associated with the significant overlap of the broad and sharp emissions of Cr3+, a novel method was applied in which the deconvolution of broad peaks was performed in two steps, by fitting the broad bands to the curve sections without the sharp peaks. The ratio of the deconvoluted 4T2 and 2E intensities gave an excellent fit to the Boltzmann distribution, with an energy gap between them of 2172 cm–1. The high relative sensitivity at room temperature of ca. 2.5% K–1 demonstrates very good potential of LaGa0.99O3:Cr0.01 for thermometry in the first biological window of transparency, relevant for in vivo biomedical applications.
T2  - Journal of Luminescence
T1  - Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry
VL  - 246
SP  - 118847
DO  - 10.1016/j.jlumin.2022.118847
ER  - 

@article{
author = "Mullins, Abbi L. and Ćirić, Aleksandar and Ristić, Zoran and Williams, J. A. Gareth and Radosavjević Evans, Ivana and Dramićanin, Miroslav",
year = "2022",
abstract = "A series of LaGa1–xO3:Cr3+x phosphors (x = 0.002, 0.005, 0.01, 0.02, 0.04) were synthesised by solid-state reaction and structurally characterised by Rietveld refinement from powder X-ray diffraction data. Amongst the five compounds, that with x = 0.01 exhibited the highest photoluminescence quantum yield at room temperature, those with higher doping levels probably suffering from self-quenching of the luminescence. This compound was selected for study of the temperature-dependence of the optical properties. The emission spectra recorded over the range 300–600 K reveal distinct features: a broad band that initially increases with temperature, attributed to fluorescence from the 4T2 excited state, and a series of sharp peaks that monotonically decline with temperature, attributed to phosphorescence from the 2E. The thermometry capabilities of LaGa0.99O3:Cr0.01 were probed by the luminescence intensity ratio (LIR) method using the broad 4T2 band relative to the sharp 2E peaks. To overcome the difficulties associated with the significant overlap of the broad and sharp emissions of Cr3+, a novel method was applied in which the deconvolution of broad peaks was performed in two steps, by fitting the broad bands to the curve sections without the sharp peaks. The ratio of the deconvoluted 4T2 and 2E intensities gave an excellent fit to the Boltzmann distribution, with an energy gap between them of 2172 cm–1. The high relative sensitivity at room temperature of ca. 2.5% K–1 demonstrates very good potential of LaGa0.99O3:Cr0.01 for thermometry in the first biological window of transparency, relevant for in vivo biomedical applications.",
journal = "Journal of Luminescence",
title = "Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry",
volume = "246",
pages = "118847",
doi = "10.1016/j.jlumin.2022.118847"
}

Mullins, A. L., Ćirić, A., Ristić, Z., Williams, J. A. G., Radosavjević Evans, I.,& Dramićanin, M.. (2022). Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry. in Journal of Luminescence, 246, 118847.
https://doi.org/10.1016/j.jlumin.2022.118847

Mullins AL, Ćirić A, Ristić Z, Williams JAG, Radosavjević Evans I, Dramićanin M. Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry. in Journal of Luminescence. 2022;246:118847.
doi:10.1016/j.jlumin.2022.118847 .

Mullins, Abbi L., Ćirić, Aleksandar, Ristić, Zoran, Williams, J. A. Gareth, Radosavjević Evans, Ivana, Dramićanin, Miroslav, "Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry" in Journal of Luminescence, 246 (2022):118847,
https://doi.org/10.1016/j.jlumin.2022.118847 . .

TY  - JOUR
AU  - Ristić, Zoran
AU  - Piotrowski, Wojciech
AU  - Medić, Mina M.
AU  - Periša, Jovana
AU  - Antić, Željka
AU  - Marciniak, Lukasz
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10225
AB  - This paper describes Mn5+-activated Sr3(PO4)2and Ba3(PO4)2phosphors as near-infrared lifetime-based luminescence thermometry probes. Materials were prepared by a solid-state method, and their rhombohedral structures were confirmed by X-ray diffraction analysis. Diffuse reflectance measurements showed broad and strong absorption between 650 and 950 nm covering the first biological transparency window and having an absorption maximum at ∼660 nm. By switching Sr with Ba, the following changes in the photoluminescent properties were observed: (i) a red shift of the emission maximum (1173 nm → 1191 nm) and (ii) a decrease in the excited-state lifetime. Thermometric properties of the phosphors were assessed by measuring and analyzing the temperature dependence of the Mn5+excited-state lifetime. Lifetime-based luminescence thermometry revealed a relative sensitivity of 0.5% K-1at 310 K (physiologically relevant range) and a maximal value of ∼1% K-1at temperatures between 400 and 500 K. © 2022 American Chemical Society.
T2  - ACS Applied Electronic Materials
T1  - Near-Infrared Luminescent Lifetime-Based Thermometry with Mn5+-Activated Sr3(PO4)2and Ba3(PO4)2Phosphors
VL  - 4
IS  - 3
SP  - 1057
EP  - 1062
DO  - 10.1021/acsaelm.1c01207
ER  - 

@article{
author = "Ristić, Zoran and Piotrowski, Wojciech and Medić, Mina M. and Periša, Jovana and Antić, Željka and Marciniak, Lukasz and Dramićanin, Miroslav",
year = "2022",
abstract = "This paper describes Mn5+-activated Sr3(PO4)2and Ba3(PO4)2phosphors as near-infrared lifetime-based luminescence thermometry probes. Materials were prepared by a solid-state method, and their rhombohedral structures were confirmed by X-ray diffraction analysis. Diffuse reflectance measurements showed broad and strong absorption between 650 and 950 nm covering the first biological transparency window and having an absorption maximum at ∼660 nm. By switching Sr with Ba, the following changes in the photoluminescent properties were observed: (i) a red shift of the emission maximum (1173 nm → 1191 nm) and (ii) a decrease in the excited-state lifetime. Thermometric properties of the phosphors were assessed by measuring and analyzing the temperature dependence of the Mn5+excited-state lifetime. Lifetime-based luminescence thermometry revealed a relative sensitivity of 0.5% K-1at 310 K (physiologically relevant range) and a maximal value of ∼1% K-1at temperatures between 400 and 500 K. © 2022 American Chemical Society.",
journal = "ACS Applied Electronic Materials",
title = "Near-Infrared Luminescent Lifetime-Based Thermometry with Mn5+-Activated Sr3(PO4)2and Ba3(PO4)2Phosphors",
volume = "4",
number = "3",
pages = "1057-1062",
doi = "10.1021/acsaelm.1c01207"
}

Ristić, Z., Piotrowski, W., Medić, M. M., Periša, J., Antić, Ž., Marciniak, L.,& Dramićanin, M.. (2022). Near-Infrared Luminescent Lifetime-Based Thermometry with Mn5+-Activated Sr3(PO4)2and Ba3(PO4)2Phosphors. in ACS Applied Electronic Materials, 4(3), 1057-1062.
https://doi.org/10.1021/acsaelm.1c01207

Ristić Z, Piotrowski W, Medić MM, Periša J, Antić Ž, Marciniak L, Dramićanin M. Near-Infrared Luminescent Lifetime-Based Thermometry with Mn5+-Activated Sr3(PO4)2and Ba3(PO4)2Phosphors. in ACS Applied Electronic Materials. 2022;4(3):1057-1062.
doi:10.1021/acsaelm.1c01207 .

Ristić, Zoran, Piotrowski, Wojciech, Medić, Mina M., Periša, Jovana, Antić, Željka, Marciniak, Lukasz, Dramićanin, Miroslav, "Near-Infrared Luminescent Lifetime-Based Thermometry with Mn5+-Activated Sr3(PO4)2and Ba3(PO4)2Phosphors" in ACS Applied Electronic Materials, 4, no. 3 (2022):1057-1062,
https://doi.org/10.1021/acsaelm.1c01207 . .

TY  - JOUR
AU  - Đačanin Far, Ljubica
AU  - Ćirić, Aleksandar
AU  - Ristić, Zoran
AU  - Periša, Jovana
AU  - Dramićanin, Tatjana
AU  - Lukić-Petrović, Svetlana R.
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10342
AB  - Y3NbO7:xEu3+ powders (x = 0.25, 0.5, 0.75, 2, 3, 5, 10 at%) were synthesized by a two-step vibrational milling, alternating with annealing. All the samples crystallize as fluorite-type structure (space group Fm3‾m), with crystallite size 50–60 nm and show a strong orange/red luminescence with an excited state lifetime around 1.2 ms. Photoluminescence excitation and emission spectra show rapid intensity decline after 3 at% of Eu3+ content, indicating this concentration as critical for the concentration quenching, and we predicted multipolar interaction as the dominant mechanism behind it. Judd–Ofelt intensity parameters (Ω2 = 0.941∙10−20 cm2, Ω4 = 0.277∙10−20 cm2, Ω6 = 0.277∙10−20 cm2) were obtained from the excitation spectrum of Y3NbO7:3 at%Eu3+. The emission of this luminescent powder is characterized by radiative and nonradiative lifetimes of 2.3 ms and 2.4 ms, respectively, and an intrinsic quantum yield of 51.5%.
T2  - Ceramics International
T1  - Photoluminescence of Y3NbO7:Eu3+ powders
DO  - 10.1016/j.ceramint.2022.06.130
ER  - 

@article{
author = "Đačanin Far, Ljubica and Ćirić, Aleksandar and Ristić, Zoran and Periša, Jovana and Dramićanin, Tatjana and Lukić-Petrović, Svetlana R. and Dramićanin, Miroslav",
year = "2022",
abstract = "Y3NbO7:xEu3+ powders (x = 0.25, 0.5, 0.75, 2, 3, 5, 10 at%) were synthesized by a two-step vibrational milling, alternating with annealing. All the samples crystallize as fluorite-type structure (space group Fm3‾m), with crystallite size 50–60 nm and show a strong orange/red luminescence with an excited state lifetime around 1.2 ms. Photoluminescence excitation and emission spectra show rapid intensity decline after 3 at% of Eu3+ content, indicating this concentration as critical for the concentration quenching, and we predicted multipolar interaction as the dominant mechanism behind it. Judd–Ofelt intensity parameters (Ω2 = 0.941∙10−20 cm2, Ω4 = 0.277∙10−20 cm2, Ω6 = 0.277∙10−20 cm2) were obtained from the excitation spectrum of Y3NbO7:3 at%Eu3+. The emission of this luminescent powder is characterized by radiative and nonradiative lifetimes of 2.3 ms and 2.4 ms, respectively, and an intrinsic quantum yield of 51.5%.",
journal = "Ceramics International",
title = "Photoluminescence of Y3NbO7:Eu3+ powders",
doi = "10.1016/j.ceramint.2022.06.130"
}

Đačanin Far, L., Ćirić, A., Ristić, Z., Periša, J., Dramićanin, T., Lukić-Petrović, S. R.,& Dramićanin, M.. (2022). Photoluminescence of Y3NbO7:Eu3+ powders. in Ceramics International.
https://doi.org/10.1016/j.ceramint.2022.06.130

Đačanin Far L, Ćirić A, Ristić Z, Periša J, Dramićanin T, Lukić-Petrović SR, Dramićanin M. Photoluminescence of Y3NbO7:Eu3+ powders. in Ceramics International. 2022;.
doi:10.1016/j.ceramint.2022.06.130 .

Đačanin Far, Ljubica, Ćirić, Aleksandar, Ristić, Zoran, Periša, Jovana, Dramićanin, Tatjana, Lukić-Petrović, Svetlana R., Dramićanin, Miroslav, "Photoluminescence of Y3NbO7:Eu3+ powders" in Ceramics International (2022),
https://doi.org/10.1016/j.ceramint.2022.06.130 . .

TY  - JOUR
AU  - Gavrilović, Tamara V.
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Elzbieciak-Piecka, Karolina
AU  - Marciniak, Lukasz
AU  - Ma, Chong-Geng
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10429
AB  - We demonstrate the thermal history forensic measurements founded on the emission intensity ratio of Eu3+-doped yttrium vanadate. An increase in phosphor’s crystallite size with annealing temperature is observed, causing a significant and permanent increase in the emission intensity and symmetry ratio (ratio of Eu3+ 5D0 → 7F1 and 5D0 → 7F2 emissions). This ratio is used as a forensic indicator of the maximal temperature to which phosphor was exposed. Additionally, we demonstrated that irreversible change in the symmetry ratio after exposure to high temperatures is insensitive to the exposure time. Finally, it is shown that thermal history readings can be performed at any temperature. The applicative potential of the proposed approach was confirmed in the proof-of-concept experiment on a steel plate covered with phosphor and exposed to high temperatures.
T2  - Measurement
T1  - Thermal history forensics using the emission intensity ratio of YVO4:Eu3+ phosphor
VL  - 202
SP  - 111942
DO  - 10.1016/j.measurement.2022.111942
ER  - 

@article{
author = "Gavrilović, Tamara V. and Periša, Jovana and Ristić, Zoran and Elzbieciak-Piecka, Karolina and Marciniak, Lukasz and Ma, Chong-Geng and Antić, Željka and Dramićanin, Miroslav",
year = "2022",
abstract = "We demonstrate the thermal history forensic measurements founded on the emission intensity ratio of Eu3+-doped yttrium vanadate. An increase in phosphor’s crystallite size with annealing temperature is observed, causing a significant and permanent increase in the emission intensity and symmetry ratio (ratio of Eu3+ 5D0 → 7F1 and 5D0 → 7F2 emissions). This ratio is used as a forensic indicator of the maximal temperature to which phosphor was exposed. Additionally, we demonstrated that irreversible change in the symmetry ratio after exposure to high temperatures is insensitive to the exposure time. Finally, it is shown that thermal history readings can be performed at any temperature. The applicative potential of the proposed approach was confirmed in the proof-of-concept experiment on a steel plate covered with phosphor and exposed to high temperatures.",
journal = "Measurement",
title = "Thermal history forensics using the emission intensity ratio of YVO4:Eu3+ phosphor",
volume = "202",
pages = "111942",
doi = "10.1016/j.measurement.2022.111942"
}

Gavrilović, T. V., Periša, J., Ristić, Z., Elzbieciak-Piecka, K., Marciniak, L., Ma, C., Antić, Ž.,& Dramićanin, M.. (2022). Thermal history forensics using the emission intensity ratio of YVO4:Eu3+ phosphor. in Measurement, 202, 111942.
https://doi.org/10.1016/j.measurement.2022.111942

Gavrilović TV, Periša J, Ristić Z, Elzbieciak-Piecka K, Marciniak L, Ma C, Antić Ž, Dramićanin M. Thermal history forensics using the emission intensity ratio of YVO4:Eu3+ phosphor. in Measurement. 2022;202:111942.
doi:10.1016/j.measurement.2022.111942 .

Gavrilović, Tamara V., Periša, Jovana, Ristić, Zoran, Elzbieciak-Piecka, Karolina, Marciniak, Lukasz, Ma, Chong-Geng, Antić, Željka, Dramićanin, Miroslav, "Thermal history forensics using the emission intensity ratio of YVO4:Eu3+ phosphor" in Measurement, 202 (2022):111942,
https://doi.org/10.1016/j.measurement.2022.111942 . .

TY  - JOUR
AU  - Dramićanin, Miroslav
AU  - Marciniak, Lukasz
AU  - Kuzman, Sanja
AU  - Piotrowski, Wojciech
AU  - Ristić, Zoran
AU  - Periša, Jovana
AU  - Evans, Ivana
AU  - Mitrić, Jelena
AU  - Đorđević, Vesna
AU  - Tadić, Julijana D.
AU  - Brik, Mikhail G.
AU  - Ma, Chong-Geng
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10439
AB  - The near-infrared luminescence of Ca6Ba(PO4)4O:Mn5+ is demonstrated and explained. When excited into the broad and strong absorption band that spans the 500–1000 nm spectral range, this phosphor provides an ultranarrow (FWHM = 5 nm) emission centered at 1140 nm that originates from a spin-forbidden 1E → 3A2 transition with a 37.5% internal quantum efficiency and an excited-state lifetime of about 350 μs. We derived the crystal field and Racah parameters and calculated the appropriate Tanabe–Sugano diagram for this phosphor. We found that 1E emission quenches due to the thermally-assisted cross-over with the 3T2 state and that the relatively high Debye temperature of 783 K of Ca6Ba(PO4)4O facilitates efficient emission. Since Ca6Ba(PO4)4O also provides efficient yellow emission of the Eu2+ dopant, we calculated and explained its electronic band structure, the partial and total density of states, effective Mulliken charges of all ions, elastic constants, Debye temperature, and vibrational spectra. Finally, we demonstrated the application of phosphor in a luminescence intensity ratio thermometry and obtained a relative sensitivity of 1.92%K−1 and a temperature resolution of 0.2 K in the range of physiological temperatures.
T2  - Light: Science & Applications
T1  - Mn5+-activated Ca6Ba(PO4)4O near-infrared phosphor and its application in luminescence thermometry
VL  - 11
IS  - 1
SP  - 279
DO  - 10.1038/s41377-022-00958-7
ER  - 

@article{
author = "Dramićanin, Miroslav and Marciniak, Lukasz and Kuzman, Sanja and Piotrowski, Wojciech and Ristić, Zoran and Periša, Jovana and Evans, Ivana and Mitrić, Jelena and Đorđević, Vesna and Tadić, Julijana D. and Brik, Mikhail G. and Ma, Chong-Geng",
year = "2022",
abstract = "The near-infrared luminescence of Ca6Ba(PO4)4O:Mn5+ is demonstrated and explained. When excited into the broad and strong absorption band that spans the 500–1000 nm spectral range, this phosphor provides an ultranarrow (FWHM = 5 nm) emission centered at 1140 nm that originates from a spin-forbidden 1E → 3A2 transition with a 37.5% internal quantum efficiency and an excited-state lifetime of about 350 μs. We derived the crystal field and Racah parameters and calculated the appropriate Tanabe–Sugano diagram for this phosphor. We found that 1E emission quenches due to the thermally-assisted cross-over with the 3T2 state and that the relatively high Debye temperature of 783 K of Ca6Ba(PO4)4O facilitates efficient emission. Since Ca6Ba(PO4)4O also provides efficient yellow emission of the Eu2+ dopant, we calculated and explained its electronic band structure, the partial and total density of states, effective Mulliken charges of all ions, elastic constants, Debye temperature, and vibrational spectra. Finally, we demonstrated the application of phosphor in a luminescence intensity ratio thermometry and obtained a relative sensitivity of 1.92%K−1 and a temperature resolution of 0.2 K in the range of physiological temperatures.",
journal = "Light: Science & Applications",
title = "Mn5+-activated Ca6Ba(PO4)4O near-infrared phosphor and its application in luminescence thermometry",
volume = "11",
number = "1",
pages = "279",
doi = "10.1038/s41377-022-00958-7"
}

Dramićanin, M., Marciniak, L., Kuzman, S., Piotrowski, W., Ristić, Z., Periša, J., Evans, I., Mitrić, J., Đorđević, V., Tadić, J. D., Brik, M. G.,& Ma, C.. (2022). Mn5+-activated Ca6Ba(PO4)4O near-infrared phosphor and its application in luminescence thermometry. in Light: Science & Applications, 11(1), 279.
https://doi.org/10.1038/s41377-022-00958-7

Dramićanin M, Marciniak L, Kuzman S, Piotrowski W, Ristić Z, Periša J, Evans I, Mitrić J, Đorđević V, Tadić JD, Brik MG, Ma C. Mn5+-activated Ca6Ba(PO4)4O near-infrared phosphor and its application in luminescence thermometry. in Light: Science & Applications. 2022;11(1):279.
doi:10.1038/s41377-022-00958-7 .

Dramićanin, Miroslav, Marciniak, Lukasz, Kuzman, Sanja, Piotrowski, Wojciech, Ristić, Zoran, Periša, Jovana, Evans, Ivana, Mitrić, Jelena, Đorđević, Vesna, Tadić, Julijana D., Brik, Mikhail G., Ma, Chong-Geng, "Mn5+-activated Ca6Ba(PO4)4O near-infrared phosphor and its application in luminescence thermometry" in Light: Science & Applications, 11, no. 1 (2022):279,
https://doi.org/10.1038/s41377-022-00958-7 . .

TY  - CONF
AU  - Racu, A. V.
AU  - Ristić, Zoran
AU  - Ćirić, Aleksandar
AU  - Đorđević, Vesna
AU  - Buse, G.
AU  - Stef, M.
AU  - Dramićanin, Miroslav
AU  - Piasecki, M.
AU  - Brik, Mikhail G.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13231
AB  - Athorough analysis of the site symmetry of dopant ions in host materials using optical spectra of these materials provides for better understanding of their optical properties and opens further perspectives for non-destructive identification of doped materials. In this work, the CaF2 and BaF2 crystals doped with 0.1 mol% ErF3 were investigated using high resolution photoluminescence (HRPL) spectroscopy at low temperatures. The structural data for both crystals were obtained from the refined XRD diffraction patterns. At low temperatures (10 K), Stark splitting of the Er3+ energy levels was identified using HRPL. These measurements allows for differentiation between C3v and C4v site symmetries using erbium green emission peaks specific to the 4S3/2→4I15/2 transition. For CaF2:Er3+ crystal, we completed and confirmed the literature reported experimental data and the crystal field calculated data of Stark splitted energy levels [1]. For the less studied BaF2:Er3+crystal, we provided the experimental PL data on the Stark energy levels. At the room temperature, the green emission curves specific to erbium 4S3/2→4I15/2 transitions were about nine times more intense in CaF2:Er3+ compared to BaF2:Er3+ when pumped into the 4G11/2 manifold. This could correlate with the structural data but also with a observed presence of mostly the C4v and less C3v isolated centers formation in CaF2:Er3+ and mostly C3v isolated centers formation in BaF2:Er3+. Such site symmetries of isolated centers were also confirmed earlier by the dielectric measurements on similar crystals [2, 3]. Analyzing the site symmetry based on the PL data offers possibility to delimitate better isolated centers which are responsible for higher emission intensity and gives opportunity for more detailed understanding mechanism responsible for emission. This open a new opportunities to design more efficient materials with desired luminescence properties.
PB  - Belgrade : Society for science development of Serbia
C3  - ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
T1  - Evaluation of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy
SP  - P-22
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13231
ER  - 

@conference{
author = "Racu, A. V. and Ristić, Zoran and Ćirić, Aleksandar and Đorđević, Vesna and Buse, G. and Stef, M. and Dramićanin, Miroslav and Piasecki, M. and Brik, Mikhail G.",
year = "2022",
abstract = "Athorough analysis of the site symmetry of dopant ions in host materials using optical spectra of these materials provides for better understanding of their optical properties and opens further perspectives for non-destructive identification of doped materials. In this work, the CaF2 and BaF2 crystals doped with 0.1 mol% ErF3 were investigated using high resolution photoluminescence (HRPL) spectroscopy at low temperatures. The structural data for both crystals were obtained from the refined XRD diffraction patterns. At low temperatures (10 K), Stark splitting of the Er3+ energy levels was identified using HRPL. These measurements allows for differentiation between C3v and C4v site symmetries using erbium green emission peaks specific to the 4S3/2→4I15/2 transition. For CaF2:Er3+ crystal, we completed and confirmed the literature reported experimental data and the crystal field calculated data of Stark splitted energy levels [1]. For the less studied BaF2:Er3+crystal, we provided the experimental PL data on the Stark energy levels. At the room temperature, the green emission curves specific to erbium 4S3/2→4I15/2 transitions were about nine times more intense in CaF2:Er3+ compared to BaF2:Er3+ when pumped into the 4G11/2 manifold. This could correlate with the structural data but also with a observed presence of mostly the C4v and less C3v isolated centers formation in CaF2:Er3+ and mostly C3v isolated centers formation in BaF2:Er3+. Such site symmetries of isolated centers were also confirmed earlier by the dielectric measurements on similar crystals [2, 3]. Analyzing the site symmetry based on the PL data offers possibility to delimitate better isolated centers which are responsible for higher emission intensity and gives opportunity for more detailed understanding mechanism responsible for emission. This open a new opportunities to design more efficient materials with desired luminescence properties.",
publisher = "Belgrade : Society for science development of Serbia",
journal = "ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts",
title = "Evaluation of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy",
pages = "P-22",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13231"
}

Racu, A. V., Ristić, Z., Ćirić, A., Đorđević, V., Buse, G., Stef, M., Dramićanin, M., Piasecki, M.,& Brik, M. G.. (2022). Evaluation of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts
Belgrade : Society for science development of Serbia., P-22.
https://hdl.handle.net/21.15107/rcub_vinar_13231

Racu AV, Ristić Z, Ćirić A, Đorđević V, Buse G, Stef M, Dramićanin M, Piasecki M, Brik MG. Evaluation of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy. in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts. 2022;:P-22.
https://hdl.handle.net/21.15107/rcub_vinar_13231 .

Racu, A. V., Ristić, Zoran, Ćirić, Aleksandar, Đorđević, Vesna, Buse, G., Stef, M., Dramićanin, Miroslav, Piasecki, M., Brik, Mikhail G., "Evaluation of site symmetries of Er3+ doped CaF2 and BaF2 crystals by high resolution photoluminescence spectroscopy" in ICOM&IWPPP 2022 : The 6th International Conference on the Physics of Optical Materials and Devices & The 5th International Workshop of Persistent and Photostimulable Phosphors : Book of abstracts (2022):P-22,
https://hdl.handle.net/21.15107/rcub_vinar_13231 .

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Stojadinović, Stevan
AU  - Ristić, Zoran
AU  - Zeković, Ivana Lj.
AU  - Kuzman, Sanja
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9140
AB  - The introduction of additional functionalities to materials is exceptionally important as it opens new applications for them. Aluminum, one of the most abundant and important materials, is coated with luminescent Sm2+-doped γ-aluminium oxide to impart thermometric functionality. Considering the potential industrial applications, two of the most widely used aluminum alloys, 6061 and 7075, are also coated. For this purpose, plasma electrolytic oxidation (PEO), an effective technique for producing hard ceramic coatings on various metal surfaces, is used. It is shown that thermometric coatings can be produced on aluminum in one-step process by adding the raw precursor to the electrolyte. The valence reduction of Ln3+ to Ln2+ is achieved during the PEO process. The intense and broad (orange to deep red) emission from the coating shows supersensitivity to temperature changes over the 100–648 K range. The temperature is obtained from the coating emission using i) the emission intensity ratio method, ii) emission lifetime, and iii) emission band position with sensitivities of 4.8% K−1, 1.2% K−1, and 8 cm−1 K−1, respectively. Several applications would benefit from the thermometric coating's excellent temperature resolution of 0.04 K and the choice of three temperature read-outs that facilitate the coating's use in different luminescence thermometry setups. © 2021 Wiley-VCH GmbH
T2  - Advanced Materials Technologies
T1  - Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence
VL  - 6
IS  - 4
SP  - 2001201
DO  - 10.1002/admt.202001201
ER  - 

@article{
author = "Ćirić, Aleksandar and Stojadinović, Stevan and Ristić, Zoran and Zeković, Ivana Lj. and Kuzman, Sanja and Antić, Željka and Dramićanin, Miroslav",
year = "2021",
abstract = "The introduction of additional functionalities to materials is exceptionally important as it opens new applications for them. Aluminum, one of the most abundant and important materials, is coated with luminescent Sm2+-doped γ-aluminium oxide to impart thermometric functionality. Considering the potential industrial applications, two of the most widely used aluminum alloys, 6061 and 7075, are also coated. For this purpose, plasma electrolytic oxidation (PEO), an effective technique for producing hard ceramic coatings on various metal surfaces, is used. It is shown that thermometric coatings can be produced on aluminum in one-step process by adding the raw precursor to the electrolyte. The valence reduction of Ln3+ to Ln2+ is achieved during the PEO process. The intense and broad (orange to deep red) emission from the coating shows supersensitivity to temperature changes over the 100–648 K range. The temperature is obtained from the coating emission using i) the emission intensity ratio method, ii) emission lifetime, and iii) emission band position with sensitivities of 4.8% K−1, 1.2% K−1, and 8 cm−1 K−1, respectively. Several applications would benefit from the thermometric coating's excellent temperature resolution of 0.04 K and the choice of three temperature read-outs that facilitate the coating's use in different luminescence thermometry setups. © 2021 Wiley-VCH GmbH",
journal = "Advanced Materials Technologies",
title = "Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence",
volume = "6",
number = "4",
pages = "2001201",
doi = "10.1002/admt.202001201"
}

Ćirić, A., Stojadinović, S., Ristić, Z., Zeković, I. Lj., Kuzman, S., Antić, Ž.,& Dramićanin, M.. (2021). Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence. in Advanced Materials Technologies, 6(4), 2001201.
https://doi.org/10.1002/admt.202001201

Ćirić A, Stojadinović S, Ristić Z, Zeković IL, Kuzman S, Antić Ž, Dramićanin M. Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence. in Advanced Materials Technologies. 2021;6(4):2001201.
doi:10.1002/admt.202001201 .

Ćirić, Aleksandar, Stojadinović, Stevan, Ristić, Zoran, Zeković, Ivana Lj., Kuzman, Sanja, Antić, Željka, Dramićanin, Miroslav, "Supersensitive Sm2+ ‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence" in Advanced Materials Technologies, 6, no. 4 (2021):2001201,
https://doi.org/10.1002/admt.202001201 . .

TY  - JOUR
AU  - Ristić, Zoran
AU  - Đorđević, Vesna R.
AU  - Medić, Mina M.
AU  - Kuzman, Sanja
AU  - Sekulić, Milica
AU  - Antić, Željka
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9624
AB  - Cr3+-doped Mg2SiO4 orthorhombic nanoparticles are synthesized by a combustion method. The 3d3 electron configuration of the Cr3+ ion results in the deep-red emission from optical transitions between d-d orbitals. Two overlapping emissions from the Cr3+ spin-forbidden 2Eg→ 4A2g and the spin-allowed 4T2g→ 4A2g electronic transitions are influenced by the strong crystal field in Mg2SiO4 and, thus, are suitable for ratiometric luminescence thermometry. The temperature-induced changes in Cr3+-doped Mg2SiO4 emission are tested for use in luminescence thermometry from cryogenic to physiologically relevant temperatures (10-350 K) by three approaches: (a) temperature-induced changes of emission intensity; (b) temperature-dependent luminescence lifetime; and (c) temperature-induced changes of emission band position. The second approach offers applicable thermometry at cryogenic temperatures, starting from temperatures as low as 50 K, while all three approaches offer applicable thermometry at physiologically relevant temperatures with relative sensitivities of 0.7% K-1 for emission intensity, 0.8% K-1 for lifetime and 0.85% K-1 for band position at 310 K. © 2021 IOP Publishing Ltd.
T2  - Measurement Science and Technology
T1  - Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures
VL  - 32
IS  - 5
SP  - 054004
DO  - 10.1088/1361-6501/abdc9a
ER  - 

@article{
author = "Ristić, Zoran and Đorđević, Vesna R. and Medić, Mina M. and Kuzman, Sanja and Sekulić, Milica and Antić, Željka and Dramićanin, Miroslav",
year = "2021",
abstract = "Cr3+-doped Mg2SiO4 orthorhombic nanoparticles are synthesized by a combustion method. The 3d3 electron configuration of the Cr3+ ion results in the deep-red emission from optical transitions between d-d orbitals. Two overlapping emissions from the Cr3+ spin-forbidden 2Eg→ 4A2g and the spin-allowed 4T2g→ 4A2g electronic transitions are influenced by the strong crystal field in Mg2SiO4 and, thus, are suitable for ratiometric luminescence thermometry. The temperature-induced changes in Cr3+-doped Mg2SiO4 emission are tested for use in luminescence thermometry from cryogenic to physiologically relevant temperatures (10-350 K) by three approaches: (a) temperature-induced changes of emission intensity; (b) temperature-dependent luminescence lifetime; and (c) temperature-induced changes of emission band position. The second approach offers applicable thermometry at cryogenic temperatures, starting from temperatures as low as 50 K, while all three approaches offer applicable thermometry at physiologically relevant temperatures with relative sensitivities of 0.7% K-1 for emission intensity, 0.8% K-1 for lifetime and 0.85% K-1 for band position at 310 K. © 2021 IOP Publishing Ltd.",
journal = "Measurement Science and Technology",
title = "Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures",
volume = "32",
number = "5",
pages = "054004",
doi = "10.1088/1361-6501/abdc9a"
}

Ristić, Z., Đorđević, V. R., Medić, M. M., Kuzman, S., Sekulić, M., Antić, Ž.,& Dramićanin, M.. (2021). Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures. in Measurement Science and Technology, 32(5), 054004.
https://doi.org/10.1088/1361-6501/abdc9a

Ristić Z, Đorđević VR, Medić MM, Kuzman S, Sekulić M, Antić Ž, Dramićanin M. Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures. in Measurement Science and Technology. 2021;32(5):054004.
doi:10.1088/1361-6501/abdc9a .

Ristić, Zoran, Đorđević, Vesna R., Medić, Mina M., Kuzman, Sanja, Sekulić, Milica, Antić, Željka, Dramićanin, Miroslav, "Triple-temperature readout in luminescence thermometry with Cr3+-doped Mg2SiO4 operating from cryogenic to physiologically relevant temperatures" in Measurement Science and Technology, 32, no. 5 (2021):054004,
https://doi.org/10.1088/1361-6501/abdc9a . .

TY  - JOUR
AU  - Periša, Jovana
AU  - Ristić, Zoran
AU  - Piotrowski, Wojciech M.
AU  - Antić, Željka
AU  - Marciniak, Lukasz
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9804
AB  - This paper presents four new temperature readout approaches to luminescence nanothermometry in spectral regions of biological transparency demonstrated on Yb3+/Er3+-doped yttrium aluminum garnet nanoparticles. Under the 10 638 cm-1 excitation, down-shifting near infrared emissions (>10 000 cm-1) are identified as those originating from Yb3+ ions' 2F5/2 → 2F7/2 (∼9709 cm-1) and Er3+ ions' 4I13/2 → 4I15/2 (∼6494 cm-1) electronic transitions and used for 4 conceptually different luminescence thermometry approaches. Observed variations in luminescence parameters with temperature offered an exceptional base for studying multiparametric temperature readouts. These include the temperature-dependence of: (i) intensity ratio between emissions from Stark components of Er3+ 4I13/2 level; (ii) intensity ratio between emissions of Yb3+ (2F5/2 → 2F7/2 transition) and Er3+ (4I13/2 → 4I15/2 transition); (iii) band shift and bandwidth and (iv) lifetime of the Yb3+ emission (2F5/2 → 2F7/2 transition) with maximal sensitivities of 1% K-1, 0.8% K-1, 0.09 cm-1 K-1, 0.46% K-1 and 0.86% K-1, respectively. The multimodal temperature readout provided by this material enables its application in different luminescence thermometry setups as well as improved the reliability of the temperature sensing by the cross-validation between measurements. © 2021 The Royal Society of Chemistry.
T2  - RSC Advances
T1  - All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles
VL  - 11
IS  - 26
SP  - 15933
EP  - 15942
DO  - 10.1039/d1ra01647d
ER  - 

@article{
author = "Periša, Jovana and Ristić, Zoran and Piotrowski, Wojciech M. and Antić, Željka and Marciniak, Lukasz and Dramićanin, Miroslav",
year = "2021",
abstract = "This paper presents four new temperature readout approaches to luminescence nanothermometry in spectral regions of biological transparency demonstrated on Yb3+/Er3+-doped yttrium aluminum garnet nanoparticles. Under the 10 638 cm-1 excitation, down-shifting near infrared emissions (>10 000 cm-1) are identified as those originating from Yb3+ ions' 2F5/2 → 2F7/2 (∼9709 cm-1) and Er3+ ions' 4I13/2 → 4I15/2 (∼6494 cm-1) electronic transitions and used for 4 conceptually different luminescence thermometry approaches. Observed variations in luminescence parameters with temperature offered an exceptional base for studying multiparametric temperature readouts. These include the temperature-dependence of: (i) intensity ratio between emissions from Stark components of Er3+ 4I13/2 level; (ii) intensity ratio between emissions of Yb3+ (2F5/2 → 2F7/2 transition) and Er3+ (4I13/2 → 4I15/2 transition); (iii) band shift and bandwidth and (iv) lifetime of the Yb3+ emission (2F5/2 → 2F7/2 transition) with maximal sensitivities of 1% K-1, 0.8% K-1, 0.09 cm-1 K-1, 0.46% K-1 and 0.86% K-1, respectively. The multimodal temperature readout provided by this material enables its application in different luminescence thermometry setups as well as improved the reliability of the temperature sensing by the cross-validation between measurements. © 2021 The Royal Society of Chemistry.",
journal = "RSC Advances",
title = "All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles",
volume = "11",
number = "26",
pages = "15933-15942",
doi = "10.1039/d1ra01647d"
}

Periša, J., Ristić, Z., Piotrowski, W. M., Antić, Ž., Marciniak, L.,& Dramićanin, M.. (2021). All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles. in RSC Advances, 11(26), 15933-15942.
https://doi.org/10.1039/d1ra01647d

Periša J, Ristić Z, Piotrowski WM, Antić Ž, Marciniak L, Dramićanin M. All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles. in RSC Advances. 2021;11(26):15933-15942.
doi:10.1039/d1ra01647d .

Periša, Jovana, Ristić, Zoran, Piotrowski, Wojciech M., Antić, Željka, Marciniak, Lukasz, Dramićanin, Miroslav, "All near-infrared multiparametric luminescence thermometry using Er3+, Yb3+-doped YAG nanoparticles" in RSC Advances, 11, no. 26 (2021):15933-15942,
https://doi.org/10.1039/d1ra01647d . .

TY  - JOUR
AU  - Rodríguez-García, Melissa M.
AU  - Ćirić, Aleksandar
AU  - Ristić, Zoran
AU  - Williams, J. A. Gareth
AU  - Dramićanin, Miroslav
AU  - Radosavjević Evans, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9846
AB  - A series of new red phosphors based on apatite-type gadolinium silicate host, Gd9.33−xEux(SiO4)6O2 (0.03 < x < 1.87), have been synthesised and analysed. The phosphors show excellent chemical and thermal stability, losing only 10% of their emission intensity at 150 °C (working LED temperature) relative to that at room temperature through the electric dipole–dipole interaction. They exhibit efficient Eu3+ narrow-band red emission (quantum yield up to 75%; full-width at half-maximum (FWHM) = 7 nm; CIE colour coordinates x = 0.65, y = 0.35) of exceptional colour purity (94.2%), and the host can be heavily doped with Eu3+ (up to 10 at%) without concentration quenching of the emission. Variable-temperature powder X-ray diffraction, photoluminescence spectroscopy and Judd–Ofelt analysis of the phosphors’ radiative properties reveal the favourable influence of the structural properties of the apatite-type host on the efficiency and thermal stability of the Eu3+-activated Gd9.33(SiO4)6O2 emission.
T2  - Journal of Materials Chemistry C
T1  - Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2
VL  - 9
IS  - 23
SP  - 7474
EP  - 7484
DO  - 10.1039/D1TC01330K
ER  - 

@article{
author = "Rodríguez-García, Melissa M. and Ćirić, Aleksandar and Ristić, Zoran and Williams, J. A. Gareth and Dramićanin, Miroslav and Radosavjević Evans, Ivana",
year = "2021",
abstract = "A series of new red phosphors based on apatite-type gadolinium silicate host, Gd9.33−xEux(SiO4)6O2 (0.03 < x < 1.87), have been synthesised and analysed. The phosphors show excellent chemical and thermal stability, losing only 10% of their emission intensity at 150 °C (working LED temperature) relative to that at room temperature through the electric dipole–dipole interaction. They exhibit efficient Eu3+ narrow-band red emission (quantum yield up to 75%; full-width at half-maximum (FWHM) = 7 nm; CIE colour coordinates x = 0.65, y = 0.35) of exceptional colour purity (94.2%), and the host can be heavily doped with Eu3+ (up to 10 at%) without concentration quenching of the emission. Variable-temperature powder X-ray diffraction, photoluminescence spectroscopy and Judd–Ofelt analysis of the phosphors’ radiative properties reveal the favourable influence of the structural properties of the apatite-type host on the efficiency and thermal stability of the Eu3+-activated Gd9.33(SiO4)6O2 emission.",
journal = "Journal of Materials Chemistry C",
title = "Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2",
volume = "9",
number = "23",
pages = "7474-7484",
doi = "10.1039/D1TC01330K"
}

Rodríguez-García, M. M., Ćirić, A., Ristić, Z., Williams, J. A. G., Dramićanin, M.,& Radosavjević Evans, I.. (2021). Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2. in Journal of Materials Chemistry C, 9(23), 7474-7484.
https://doi.org/10.1039/D1TC01330K

Rodríguez-García MM, Ćirić A, Ristić Z, Williams JAG, Dramićanin M, Radosavjević Evans I. Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2. in Journal of Materials Chemistry C. 2021;9(23):7474-7484.
doi:10.1039/D1TC01330K .

Rodríguez-García, Melissa M., Ćirić, Aleksandar, Ristić, Zoran, Williams, J. A. Gareth, Dramićanin, Miroslav, Radosavjević Evans, Ivana, "Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2" in Journal of Materials Chemistry C, 9, no. 23 (2021):7474-7484,
https://doi.org/10.1039/D1TC01330K . .

TY  - JOUR
AU  - Ćirić, Aleksandar
AU  - Ristić, Zoran
AU  - Barudžija, Tanja
AU  - Srivastava, Alok
AU  - Dramićanin, Miroslav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9848
AB  - Judd–Ofelt (JO) theory explains the optical properties of trivalent lanthanides using only three intensity parameters. The JO parametrization is a complicated procedure of absorption spectra analysis, especially cumbersome for powders and non-transparent materials. For the Pr3+ activated materials, the procedure is additionally complicated due to strong interaction of low-lying Pr3+ 4f5d energy levels with the 4f levels. Here, the straightforward JO parametrization method that uses the emission spectrum and the excited state lifetime of the Pr3+ 3P0 level which does not require any fitting procedure are shown. In addition, the theory and software for calculations of JO parameters from Pr3+ emission are explained. The method requirements are low-temperature photoluminescence measurements of Pr3+ introduced in low phonon energy hosts with a relatively high lying 4f5d energy level. The method is demonstrated on emissions of YF3:Pr3+ and LaF3:Pr3+ powders.
T2  - Advanced Theory and Simulations
T1  - Judd–Ofelt Parametrization from the Emission Spectrum of Pr3+ Doped Materials: Theory, Application Software, and Demonstration on Pr3+ Doped YF3 and LaF3
VL  - 4
IS  - 6
SP  - 2100082
DO  - 10.1002/adts.202100082
ER  - 

@article{
author = "Ćirić, Aleksandar and Ristić, Zoran and Barudžija, Tanja and Srivastava, Alok and Dramićanin, Miroslav",
year = "2021",
abstract = "Judd–Ofelt (JO) theory explains the optical properties of trivalent lanthanides using only three intensity parameters. The JO parametrization is a complicated procedure of absorption spectra analysis, especially cumbersome for powders and non-transparent materials. For the Pr3+ activated materials, the procedure is additionally complicated due to strong interaction of low-lying Pr3+ 4f5d energy levels with the 4f levels. Here, the straightforward JO parametrization method that uses the emission spectrum and the excited state lifetime of the Pr3+ 3P0 level which does not require any fitting procedure are shown. In addition, the theory and software for calculations of JO parameters from Pr3+ emission are explained. The method requirements are low-temperature photoluminescence measurements of Pr3+ introduced in low phonon energy hosts with a relatively high lying 4f5d energy level. The method is demonstrated on emissions of YF3:Pr3+ and LaF3:Pr3+ powders.",
journal = "Advanced Theory and Simulations",
title = "Judd–Ofelt Parametrization from the Emission Spectrum of Pr3+ Doped Materials: Theory, Application Software, and Demonstration on Pr3+ Doped YF3 and LaF3",
volume = "4",
number = "6",
pages = "2100082",
doi = "10.1002/adts.202100082"
}

Ćirić, A., Ristić, Z., Barudžija, T., Srivastava, A.,& Dramićanin, M.. (2021). Judd–Ofelt Parametrization from the Emission Spectrum of Pr3+ Doped Materials: Theory, Application Software, and Demonstration on Pr3+ Doped YF3 and LaF3. in Advanced Theory and Simulations, 4(6), 2100082.
https://doi.org/10.1002/adts.202100082

Ćirić A, Ristić Z, Barudžija T, Srivastava A, Dramićanin M. Judd–Ofelt Parametrization from the Emission Spectrum of Pr3+ Doped Materials: Theory, Application Software, and Demonstration on Pr3+ Doped YF3 and LaF3. in Advanced Theory and Simulations. 2021;4(6):2100082.
doi:10.1002/adts.202100082 .

Ćirić, Aleksandar, Ristić, Zoran, Barudžija, Tanja, Srivastava, Alok, Dramićanin, Miroslav, "Judd–Ofelt Parametrization from the Emission Spectrum of Pr3+ Doped Materials: Theory, Application Software, and Demonstration on Pr3+ Doped YF3 and LaF3" in Advanced Theory and Simulations, 4, no. 6 (2021):2100082,
https://doi.org/10.1002/adts.202100082 . .