Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics
Апстракт
Herein we presented polymer complex solution method for production of well crystalline europium doped Y2O3 nanopowders. Polyethylene glycol (PEG) of five different molecular weights is used both as a fuel and as a nucleation agent for the crystallization. Powders were cold-pressed and sintered to obtain ceramics. SEM images taken from ceramic pellets indicate formation of a dense structure, with a pronounced grain growth and low pore concentration. Luminescence emission spectra of powders and ceramics are similar, and in good agreement with theoretical data. Lifetimes of Eu3+5D0 level in nanocrystalline powders are higher compared to one observed in bulk, confirming in this case theory of lifetime lengthening in nanophosphors due to the change of effective refraction index. As expected, lifetime values in ceramic samples decrease toward the value in bulk Y2O3. The optical filling factor is calculated from observed decay times, providing a measure of discrepancy between powder and bulk ...state regarding their luminescent properties. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Powders-chemical preparation / Grain size / Optical properties / Y2O3Извор:
Ceramics International, 2011, 37, 2, 525-531Финансирање / пројекти:
- Ministry of Science of the Republic of Serbia [142066], NATO [CBP.EAP.RIG.983373]
DOI: 10.1016/j.ceramint.2010.09.040
ISSN: 0272-8842
WoS: 000286957900012
Scopus: 2-s2.0-78650208470
Колекције
Институција/група
VinčaTY - JOUR AU - Krsmanović, Radenka AU - Antić, Željka AU - Nikolić, Marko G. AU - Mitrić, Miodrag AU - Dramićanin, Miroslav PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4211 AB - Herein we presented polymer complex solution method for production of well crystalline europium doped Y2O3 nanopowders. Polyethylene glycol (PEG) of five different molecular weights is used both as a fuel and as a nucleation agent for the crystallization. Powders were cold-pressed and sintered to obtain ceramics. SEM images taken from ceramic pellets indicate formation of a dense structure, with a pronounced grain growth and low pore concentration. Luminescence emission spectra of powders and ceramics are similar, and in good agreement with theoretical data. Lifetimes of Eu3+5D0 level in nanocrystalline powders are higher compared to one observed in bulk, confirming in this case theory of lifetime lengthening in nanophosphors due to the change of effective refraction index. As expected, lifetime values in ceramic samples decrease toward the value in bulk Y2O3. The optical filling factor is calculated from observed decay times, providing a measure of discrepancy between powder and bulk state regarding their luminescent properties. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics VL - 37 IS - 2 SP - 525 EP - 531 DO - 10.1016/j.ceramint.2010.09.040 ER -
@article{ author = "Krsmanović, Radenka and Antić, Željka and Nikolić, Marko G. and Mitrić, Miodrag and Dramićanin, Miroslav", year = "2011", abstract = "Herein we presented polymer complex solution method for production of well crystalline europium doped Y2O3 nanopowders. Polyethylene glycol (PEG) of five different molecular weights is used both as a fuel and as a nucleation agent for the crystallization. Powders were cold-pressed and sintered to obtain ceramics. SEM images taken from ceramic pellets indicate formation of a dense structure, with a pronounced grain growth and low pore concentration. Luminescence emission spectra of powders and ceramics are similar, and in good agreement with theoretical data. Lifetimes of Eu3+5D0 level in nanocrystalline powders are higher compared to one observed in bulk, confirming in this case theory of lifetime lengthening in nanophosphors due to the change of effective refraction index. As expected, lifetime values in ceramic samples decrease toward the value in bulk Y2O3. The optical filling factor is calculated from observed decay times, providing a measure of discrepancy between powder and bulk state regarding their luminescent properties. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics", volume = "37", number = "2", pages = "525-531", doi = "10.1016/j.ceramint.2010.09.040" }
Krsmanović, R., Antić, Ž., Nikolić, M. G., Mitrić, M.,& Dramićanin, M.. (2011). Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics. in Ceramics International, 37(2), 525-531. https://doi.org/10.1016/j.ceramint.2010.09.040
Krsmanović R, Antić Ž, Nikolić MG, Mitrić M, Dramićanin M. Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics. in Ceramics International. 2011;37(2):525-531. doi:10.1016/j.ceramint.2010.09.040 .
Krsmanović, Radenka, Antić, Željka, Nikolić, Marko G., Mitrić, Miodrag, Dramićanin, Miroslav, "Preparation of Y2O3:Eu3+ nanopowders via polymer complex solution method and luminescence properties of the sintered ceramics" in Ceramics International, 37, no. 2 (2011):525-531, https://doi.org/10.1016/j.ceramint.2010.09.040 . .