The Cr-doping effect on white light emitting properties of Ce:YAG phosphor ceramics

被引:62
作者
Tang, Yanru [1 ,2 ]
Zhou, Shengming [1 ]
Yi, Xuezhuan [1 ]
Zhang, Shuai [1 ]
Hao, Deming [1 ,3 ]
Shao, Xiuchen [1 ,3 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
[3] Shanghai Tech Univ, Shanghai, Peoples R China
基金
中国国家自然科学基金;
关键词
dopants; doping; fluorescence; impurities; transparent ceramics; yttrium aluminum garnet; TRANSPARENT CERAMICS; LUMINESCENCE; Y3AL5O12;
D O I
10.1111/jace.14717
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The Cr/Ce-doped YAG transparent ceramic was fabricated by the solid-state reaction in vacuum. The Cr/Ce-doped YAG ceramic phosphor effectively complement the red spectral component and improve the color rendering performance when excited by blue light that is due to the effective energy transfer between Cr3+ ion and Ce3+ ion. However, the energy transfer from Ce3+ to Cr3+ ion leads to energy loss and therefore the luminous efficacy of the WLED which is composed of blue LED chip and the Cr/Ce-doped YAG ceramic phosphor decreases. The composite phase structure of ceramic phosphor is designed for improving the extraction efficacy and increasing the luminous efficacy by breaking the total internal reflection (TIR) at the interface between air and ceramic.
引用
收藏
页码:2590 / 2595
页数:6
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