Single-phased white-light-emitting KCaGd(PO4)2:Eu2+, Tb3+, Mn2+ phosphors for LED applications

被引：78
|
作者：
Liu, Wei-Ren [1 ]
Huang, Chien-Hao [2 ]
Yeh, Chiao-Wen [3 ]
Chiu, Yi-Chen [2 ]
Yeh, Yao-Tsung [2 ]
Liu, Ru-Shi [3 ]
机构：
[1] Chung Yuan Christian Univ, Dept Chem Engn, R&D Ctr Membrane Technol, Chungli 32023, Taiwan
[2] ITRI, Mat & Chem Res Labs, Hsichu 30011, Taiwan
[3] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
来源：
RSC ADVANCES | 2013年 / 3卷 / 23期
关键词：
ENERGY-TRANSFER; LUMINESCENCE; DIODES; CE3+;
D O I：
10.1039/c3ra40471d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Single-phased white light-emitting KCaGd(PO4)(2):Eu2+, Tb3+, Mn2+ phosphors were synthesized by a solid state reaction. By changing the doping contents of Eu2+, Tb3+ and Mn2+, the emission hue could be precisely controlled via the energy transfer mechanism. The structure refinement, luminescence properties as well as their thermal quenching and energy transfer mechanism were firstly investigated. The mechanism of transferring energy between Eu2+, Mn2+ and Tb3+ ions was also discussed in this study. The optimal-composition for white-light is K(Ca0.89Eu0.01Mn0.1)(Gd0.9Tb0.1)(PO4)(2), which gives the CIE coordinates of (0.2984, 0.3171). These results indicate that the KCaGd(PO4)(2):Eu2+, Mn2+, Tb3+ phosphor could be a promising single-composition phosphor for applications involving white-light NUV LEDs.
引用
收藏
页码：9023 / 9028
页数：6
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