Realization of Enhanced Sensitization Effect in CaYAl3O7: Ce3+, Sm3+ Phosphors via Tb3+ Ions

被引：9

作者：

Yu, Hongling ^{[1
]}

Yu, Xue ^{[1
,2
]}

Xu, Xuhui ^{[1
,2
]}

Zhou, Dacheng ^{[1
,2
]}

Qiu, Jianbei ^{[1
,2
]}

机构：

[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China

[2] Key Lab Adv Mat Yunnan Prov, Kunming 650093, Peoples R China

来源：

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2014年 / 3卷 / 12期

基金：

中国国家自然科学基金;

关键词：

RED-EMITTING PHOSPHOR; RARE-EARTH IONS; ENERGY-TRANSFER; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; MN2+ PHOSPHORS; EMISSION; ABSORPTION; EU3+; BAND;

D O I：

10.1149/2.022406jss

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of single-phase CaYAl3O7: Ce3+, Tb3+, Sm3+ phosphors has been synthesized by combustion method. Considering the inefficient sensitization effect of Ce3+ to Sm3+, Tb3+ ion was selected to circumventMMCT quenching existing in Ce3+-Sm3+ pairs, enabling Sm(3+4)G(5/2)-H-6(J) line emission to be sensitized by the allowed Ce3+ 4f(1)-> 5d(1) absorption, and an optimal concentration of Tb3+ was determined to 0.60. Results indicate that the Tb3+ ions play a role of energy transfer bridge to connect the Ce3+ and Sm3+ ions. In addition, a satisfactory chromaticity coordinate of (0.33, 0.35) is achieved upon excitation of 360 nm. It demonstrates that the samples of CaYAl3O7: Ce3+, Tb3+, Sm3+ phosphors can be a single phosphor converted white light sources.(C) 2014 The Electrochemical Society.All rights reserved.

引用

页码：R245 / R250

页数：6

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