Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions
No Thumbnail
Authors
Krsmanović, RadenkaAntić, Željka
Speghini, Adolfo
Brik, Mikhail G.
Bartova, Barbora
Bettinelli, Marco
Dramićanin, Miroslav
Article
Metadata
Show full item recordAbstract
A series of europium doped (LuxGd1-x)(2)O-3 (x = 1, 0.75, 0.5, 0.25 and 0) nanocrystalline powders were prepared using a polymer complex solution method based on a polyethylene glycol (PEG) as fuel. The samples were systematically characterized by powder X-ray diffraction, scanning and transmission electron microscopies and luminescence spectroscopy. The powders consisted of well-crystalline, cubic phase nanoparticles of 20-50 nm in size, which unit cell parameter increased with Gd content complying with Vegards law. Upon blue light excitation all samples exhibited strong red luminescence typical of trivalent europium ion. The maximum splitting of the F-7(1) manifold changed linearly with the composition change and decreased with lowering of the crystal field strength. Relatively long lifetime values were obtained for D-5(0) (similar to 1.4 ms) and D-5(1) (similar to 120 mu s) levels. For all samples we estimated theoretical densities, refractive index coefficients, optical filling fac...tors and Z(eff), in order to estimate the Judd-Ofelt intensity parameters and branching ratios. The calculated lifetime of D-5(0) level was in line with experimentally obtained luminescence lifetime values. Relative integrated emissions were measured on all samples and Gd2O3 sample proved to have a maximum amount of the characteristic Eu3+ luminescence. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:
Nanophosphors / Sesquioxides / Rare earths / Optical properties / Gd2O3 / Lu2O3Source:
Optical Materials, 2014, 36, 6, 1083-1091Funding / projects:
- LUMINET - European Network on Luminescent Materials (EU-FP7-316906)
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites (RS-MESTD-Basic Research (BR or ON)-172056)
- European Social Funds Doctoral Studies and Internationalization Programme DoRa, European Regional Development Fund (Centre of Excellence Mesosystems: Theory and Applications) [TK114]
DOI: 10.1016/j.optmat.2014.01.039
ISSN: 0925-3467; 1873-1252
WoS: 000334010900014
Scopus: 2-s2.0-84897595639
Collections
Institution/Community
VinčaTY - JOUR AU - Krsmanović, Radenka AU - Antić, Željka AU - Speghini, Adolfo AU - Brik, Mikhail G. AU - Bartova, Barbora AU - Bettinelli, Marco AU - Dramićanin, Miroslav PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5944 AB - A series of europium doped (LuxGd1-x)(2)O-3 (x = 1, 0.75, 0.5, 0.25 and 0) nanocrystalline powders were prepared using a polymer complex solution method based on a polyethylene glycol (PEG) as fuel. The samples were systematically characterized by powder X-ray diffraction, scanning and transmission electron microscopies and luminescence spectroscopy. The powders consisted of well-crystalline, cubic phase nanoparticles of 20-50 nm in size, which unit cell parameter increased with Gd content complying with Vegards law. Upon blue light excitation all samples exhibited strong red luminescence typical of trivalent europium ion. The maximum splitting of the F-7(1) manifold changed linearly with the composition change and decreased with lowering of the crystal field strength. Relatively long lifetime values were obtained for D-5(0) (similar to 1.4 ms) and D-5(1) (similar to 120 mu s) levels. For all samples we estimated theoretical densities, refractive index coefficients, optical filling factors and Z(eff), in order to estimate the Judd-Ofelt intensity parameters and branching ratios. The calculated lifetime of D-5(0) level was in line with experimentally obtained luminescence lifetime values. Relative integrated emissions were measured on all samples and Gd2O3 sample proved to have a maximum amount of the characteristic Eu3+ luminescence. (C) 2014 Elsevier B.V. All rights reserved. T2 - Optical Materials T1 - Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions VL - 36 IS - 6 SP - 1083 EP - 1091 DO - 10.1016/j.optmat.2014.01.039 ER -
@article{ author = "Krsmanović, Radenka and Antić, Željka and Speghini, Adolfo and Brik, Mikhail G. and Bartova, Barbora and Bettinelli, Marco and Dramićanin, Miroslav", year = "2014", abstract = "A series of europium doped (LuxGd1-x)(2)O-3 (x = 1, 0.75, 0.5, 0.25 and 0) nanocrystalline powders were prepared using a polymer complex solution method based on a polyethylene glycol (PEG) as fuel. The samples were systematically characterized by powder X-ray diffraction, scanning and transmission electron microscopies and luminescence spectroscopy. The powders consisted of well-crystalline, cubic phase nanoparticles of 20-50 nm in size, which unit cell parameter increased with Gd content complying with Vegards law. Upon blue light excitation all samples exhibited strong red luminescence typical of trivalent europium ion. The maximum splitting of the F-7(1) manifold changed linearly with the composition change and decreased with lowering of the crystal field strength. Relatively long lifetime values were obtained for D-5(0) (similar to 1.4 ms) and D-5(1) (similar to 120 mu s) levels. For all samples we estimated theoretical densities, refractive index coefficients, optical filling factors and Z(eff), in order to estimate the Judd-Ofelt intensity parameters and branching ratios. The calculated lifetime of D-5(0) level was in line with experimentally obtained luminescence lifetime values. Relative integrated emissions were measured on all samples and Gd2O3 sample proved to have a maximum amount of the characteristic Eu3+ luminescence. (C) 2014 Elsevier B.V. All rights reserved.", journal = "Optical Materials", title = "Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions", volume = "36", number = "6", pages = "1083-1091", doi = "10.1016/j.optmat.2014.01.039" }
Krsmanović, R., Antić, Ž., Speghini, A., Brik, M. G., Bartova, B., Bettinelli, M.,& Dramićanin, M.. (2014). Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions. in Optical Materials, 36(6), 1083-1091. https://doi.org/10.1016/j.optmat.2014.01.039
Krsmanović R, Antić Ž, Speghini A, Brik MG, Bartova B, Bettinelli M, Dramićanin M. Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions. in Optical Materials. 2014;36(6):1083-1091. doi:10.1016/j.optmat.2014.01.039 .
Krsmanović, Radenka, Antić, Željka, Speghini, Adolfo, Brik, Mikhail G., Bartova, Barbora, Bettinelli, Marco, Dramićanin, Miroslav, "Structural and spectroscopic studies of Eu3+ doped Lu2O3-Gd2O3 solid solutions" in Optical Materials, 36, no. 6 (2014):1083-1091, https://doi.org/10.1016/j.optmat.2014.01.039 . .