LiY1-xEux(MoO4)2 as a promising red-emitting phosphor of WLEDs synthesized by sol-gel process

被引：0
|
作者：
周贤菊 [1 ]
周桐辉 [1 ]
李英茂 [1 ]
冯乔春 [2 ]
机构：
[1] Department of Mathematics and Physics, Chongqing University of Posts and Telecommunications
[2] Chongqing Zhongtian Chemical In-dustry Co. Ltd.
来源：
Journal of Rare Earths | 2012年 / 30卷 / 04期
基金：
中国国家自然科学基金;
关键词：
LiY1-xEux(MoO4)2; red phosphor; white LEDs; sol-gel technique; rare earths;
D O I：
暂无
中图分类号：
O614.33 [镧系元素（稀土元素）];
学科分类号：
摘要：
A series of LiY1-xEux(MoO4)2 red-emitting phosphors were synthesized by sol-gel technique. The phase impurity and spectroscopic properties were characterized by X-ray diffraction (XRD) and photo-luminescence (PL) spectra respectively. The effect of Eu3+ doping con-centration, annealing temperature and the molar ratio of citric acid to the total metal cations (C:M) on the optical properties of the red phos-phors were studied and optimized. It was found that all the samples could be excited efficiently by blue light (465 nm), which was well coin-cident with the emission of GaN based LED chips. The luminescent intensity reached maximum when annealing temperature was 750 ?C and Eu3+ doping concentration was 5% with C:M=3:1.
引用
收藏
页码：315 / 319
页数：5
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