Solvothermal synthesis and luminescent properties of Y2Ti2O7:Eu3+ spheres

被引：21

作者：

Pavitra, E. ^{[1
]}

Raju, G. Seeta Rama ^{[1
]}

Yu, Jae Su ^{[1
]}

机构：

[1] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin 446701, South Korea

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2013年 / 7卷 / 03期

关键词：

Y2Ti2O7:Eu3+ phosphors; spherical morphology; solvothermal method; luminescence; PYROCHLORE; PHOSPHORS; EU3+;

D O I：

10.1002/pssr.201206484

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pyrochlore-structured yttrium titanate phosphors activated by trivalent europium ions (Y2Ti2O7(YT):Eu3+), with spherical morphology, were synthesized at different pH values by a solvothermal process. From the structural and morphological measurements, the annealing temperature had no effect on the spherical morphology of the YT:Eu3+ sample. The photoluminescence excitation and emission spectra were taken by activating the Eu3+ ions in the YT host lattice as functions of Eu3+ ion concentration and annealing temperature. The optimal doping concentration was found to be 4 mol%, exhibiting an excellent orange-red emission due to the highest intensity of the D-5(0) -> F-7(1) transition. When the YT:Eu3+ phosphor was mixed with YAG:Ce3+ phosphor, a brilliant white light emission was achieved. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：224 / 227

页数：4

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