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
收藏
页码：R245 / R250
页数：6
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