TY  - CONF
AU  - Mitrić, J.
AU  - Paunović, N.
AU  - Mitrić, Miodrag
AU  - Ćirković, J.
AU  - Gilić, M.
AU  - Romčević, M.
AU  - Romčević, N.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10814
AB  - In this work two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV – Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4 . The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Phonon Investigations in YVO4: Eu3+ Nanopowders
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10814
ER  - 

@conference{
author = "Mitrić, J. and Paunović, N. and Mitrić, Miodrag and Ćirković, J. and Gilić, M. and Romčević, M. and Romčević, N.",
year = "2021",
abstract = "In this work two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV – Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4 . The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Phonon Investigations in YVO4: Eu3+ Nanopowders",
pages = "71",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10814"
}

Mitrić, J., Paunović, N., Mitrić, M., Ćirković, J., Gilić, M., Romčević, M.,& Romčević, N.. (2021). Phonon Investigations in YVO4: Eu3+ Nanopowders. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 71.
https://hdl.handle.net/21.15107/rcub_vinar_10814

Mitrić J, Paunović N, Mitrić M, Ćirković J, Gilić M, Romčević M, Romčević N. Phonon Investigations in YVO4: Eu3+ Nanopowders. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:71.
https://hdl.handle.net/21.15107/rcub_vinar_10814 .

Mitrić, J., Paunović, N., Mitrić, Miodrag, Ćirković, J., Gilić, M., Romčević, M., Romčević, N., "Phonon Investigations in YVO4: Eu3+ Nanopowders" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):71,
https://hdl.handle.net/21.15107/rcub_vinar_10814 .

TY  - CONF
AU  - Gilić, M.
AU  - Mitrić, J.
AU  - Petrović, Suzana
AU  - Peruško, Davor
AU  - Ćirković, J.
AU  - Reissig, L.
AU  - Romčević, N.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11890
AB  - We report an experimental study of Cr2O3 thin films (60, 300, 350 nm) deposited on silicon and glass substrates using the Balzers Sputtron II System. The structural and optical properties were investigated by means of AFM, XRD, UV-VIS, Raman and infrared spectroscopy, in order to determine the suitability of the as-obtained films as potential active layers in novel differential inorganic photodetectors. AFM measurements revealed that all films are well-deposited, without the presence of any cracks or voids. The crystalline peaks in the XRD spectra belonged to the trigonal Cr2O3 structure. UV-VIS measurements revealed a strong red shift in the absorption maxima with reducing film thickness. IR and Raman spectroscopy show a dependence of the characteristic vibrations on film thickness as well as on the substrate. In conclusion, our results indicate that the Cr2O3 film of 300 nm thickness is so far the most promising candidate as photoactive semiconducting layer in differential photodetectors.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Optical and Structural Investigation of Cr2O3 Thin Films: the Effect of Thickness on Their Applicability in Differential Photodetectors
SP  - 105
EP  - 105
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11890
ER  - 

@conference{
author = "Gilić, M. and Mitrić, J. and Petrović, Suzana and Peruško, Davor and Ćirković, J. and Reissig, L. and Romčević, N.",
year = "2019",
abstract = "We report an experimental study of Cr2O3 thin films (60, 300, 350 nm) deposited on silicon and glass substrates using the Balzers Sputtron II System. The structural and optical properties were investigated by means of AFM, XRD, UV-VIS, Raman and infrared spectroscopy, in order to determine the suitability of the as-obtained films as potential active layers in novel differential inorganic photodetectors. AFM measurements revealed that all films are well-deposited, without the presence of any cracks or voids. The crystalline peaks in the XRD spectra belonged to the trigonal Cr2O3 structure. UV-VIS measurements revealed a strong red shift in the absorption maxima with reducing film thickness. IR and Raman spectroscopy show a dependence of the characteristic vibrations on film thickness as well as on the substrate. In conclusion, our results indicate that the Cr2O3 film of 300 nm thickness is so far the most promising candidate as photoactive semiconducting layer in differential photodetectors.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Optical and Structural Investigation of Cr2O3 Thin Films: the Effect of Thickness on Their Applicability in Differential Photodetectors",
pages = "105-105",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11890"
}

Gilić, M., Mitrić, J., Petrović, S., Peruško, D., Ćirković, J., Reissig, L.,& Romčević, N.. (2019). Optical and Structural Investigation of Cr2O3 Thin Films: the Effect of Thickness on Their Applicability in Differential Photodetectors. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 105-105.
https://hdl.handle.net/21.15107/rcub_vinar_11890

Gilić M, Mitrić J, Petrović S, Peruško D, Ćirković J, Reissig L, Romčević N. Optical and Structural Investigation of Cr2O3 Thin Films: the Effect of Thickness on Their Applicability in Differential Photodetectors. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:105-105.
https://hdl.handle.net/21.15107/rcub_vinar_11890 .

Gilić, M., Mitrić, J., Petrović, Suzana, Peruško, Davor, Ćirković, J., Reissig, L., Romčević, N., "Optical and Structural Investigation of Cr2O3 Thin Films: the Effect of Thickness on Their Applicability in Differential Photodetectors" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):105-105,
https://hdl.handle.net/21.15107/rcub_vinar_11890 .

TY  - CONF
AU  - Ćurčić, M.
AU  - Gilić, M.
AU  - Hadžić, B.
AU  - Trajić, J.
AU  - Lazarević, Z.
AU  - Romčević, M.
AU  - Radojević, V.
AU  - Bjelajac, A.
AU  - Radović, I.
AU  - Balaž, P.
AU  - Romčević, N.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10880
AB  - Nanocomposites derived from nano-scale inorganic/organic particles that are dispersed in a polymer matrix homogeneously have attracted considerable attention [1-3]. The diverse properties of numerous polymers to choose from are well documented, including both plastics and elastomers, which are the main two types of polymers. Organic/inorganic hybrid materials offer highly interesting and versatile applications when incorporated with a polymer. Among the inorganic/polymer nanocomposites, metal sulfides/polymer nanocomposites have been researched extensively due to their interesting optical, electrical and mechanical properties. Their excellent physical and chemical properties in various fields, such as catalysis, sensors, solar cells, photo detectors, light emitting diodes and laser communication, have made them very attractive and promising materials. Semiconductor particles immobilized in a polymer matrix with nano-scale grain size show different properties relative to the same material in bulk form because of quantum size effects. Many different synthetic approaches, like thermal evaporation, chemical bath deposition, chemical vapor deposition (CVD), laser ablation, hydrothermal, homogeneous precipitation in an organic matrix, sonochemical and sol–gel methods, have been employed for the synthesis of metal sulfide nanoparticles. In this work we investigate the structural and optical properties of polymer nanocomposites prepared by the incorporation of ZnS nanoparticles into the matrices of polymer poly (methyl methacrylate) (PMMA). The structural studies of the metal sulfides/polymer nanocomposites were carried out by Scanning electron microscopy (SEM), Raman spectroscopy and Far-infrared spectroscopy. The dielectric function of ZnS nanoparticles is modeled as a mixture of homogenous spherical inclusion in air, by the Maxwell-Garnet formula. In the analysis of the far-infrared reflection spectra, appearance of combined plasmon-LO phonon modes with high phonon damping are observed, which causes decreases of coupled plasmon-phonon frequencies.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade
T1  - Preparation and optical properties of ZnS/Poly (methyl methacrylate) nanocomposite
SP  - 77
EP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10880
ER  - 

@conference{
author = "Ćurčić, M. and Gilić, M. and Hadžić, B. and Trajić, J. and Lazarević, Z. and Romčević, M. and Radojević, V. and Bjelajac, A. and Radović, I. and Balaž, P. and Romčević, N.",
year = "2018",
abstract = "Nanocomposites derived from nano-scale inorganic/organic particles that are dispersed in a polymer matrix homogeneously have attracted considerable attention [1-3]. The diverse properties of numerous polymers to choose from are well documented, including both plastics and elastomers, which are the main two types of polymers. Organic/inorganic hybrid materials offer highly interesting and versatile applications when incorporated with a polymer. Among the inorganic/polymer nanocomposites, metal sulfides/polymer nanocomposites have been researched extensively due to their interesting optical, electrical and mechanical properties. Their excellent physical and chemical properties in various fields, such as catalysis, sensors, solar cells, photo detectors, light emitting diodes and laser communication, have made them very attractive and promising materials. Semiconductor particles immobilized in a polymer matrix with nano-scale grain size show different properties relative to the same material in bulk form because of quantum size effects. Many different synthetic approaches, like thermal evaporation, chemical bath deposition, chemical vapor deposition (CVD), laser ablation, hydrothermal, homogeneous precipitation in an organic matrix, sonochemical and sol–gel methods, have been employed for the synthesis of metal sulfide nanoparticles. In this work we investigate the structural and optical properties of polymer nanocomposites prepared by the incorporation of ZnS nanoparticles into the matrices of polymer poly (methyl methacrylate) (PMMA). The structural studies of the metal sulfides/polymer nanocomposites were carried out by Scanning electron microscopy (SEM), Raman spectroscopy and Far-infrared spectroscopy. The dielectric function of ZnS nanoparticles is modeled as a mixture of homogenous spherical inclusion in air, by the Maxwell-Garnet formula. In the analysis of the far-infrared reflection spectra, appearance of combined plasmon-LO phonon modes with high phonon damping are observed, which causes decreases of coupled plasmon-phonon frequencies.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade",
title = "Preparation and optical properties of ZnS/Poly (methyl methacrylate) nanocomposite",
pages = "77-78",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10880"
}

Ćurčić, M., Gilić, M., Hadžić, B., Trajić, J., Lazarević, Z., Romčević, M., Radojević, V., Bjelajac, A., Radović, I., Balaž, P.,& Romčević, N.. (2018). Preparation and optical properties of ZnS/Poly (methyl methacrylate) nanocomposite. in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade
Belgrade : Serbian Ceramic Society., 77-78.
https://hdl.handle.net/21.15107/rcub_vinar_10880

Ćurčić M, Gilić M, Hadžić B, Trajić J, Lazarević Z, Romčević M, Radojević V, Bjelajac A, Radović I, Balaž P, Romčević N. Preparation and optical properties of ZnS/Poly (methyl methacrylate) nanocomposite. in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade. 2018;:77-78.
https://hdl.handle.net/21.15107/rcub_vinar_10880 .

Ćurčić, M., Gilić, M., Hadžić, B., Trajić, J., Lazarević, Z., Romčević, M., Radojević, V., Bjelajac, A., Radović, I., Balaž, P., Romčević, N., "Preparation and optical properties of ZnS/Poly (methyl methacrylate) nanocomposite" in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade (2018):77-78,
https://hdl.handle.net/21.15107/rcub_vinar_10880 .