Preparation, structural and luminescent properties of Ba2Gd2Si4O13:Eu3+ for white LEDs

被引：58
|
作者：
Guo, Hai [1 ]
Zhang, Hao [1 ,2 ]
Wei, RongFei [1 ]
Zheng, MengDi [1 ]
Zhang, LiHong [1 ]
机构：
[1] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 06期
基金：
中国国家自然科学基金;
关键词：
LIGHT-EMITTING-DIODES; RED PHOSPHOR; ULTRAVIOLET-LIGHT; GLASSES; FLUX; EU3+;
D O I：
10.1364/OE.19.00A201
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
To find out efficient red phosphors used for white light-emitting diodes (LEDs), a new Ba2Gd2Si4O13:Eu3+ phosphor was prepared by conventional solid-state reaction method. The effect of Li2CO3 flux and Eu3+ doping concentrations on structural and luminescent properties of Ba2Gd2Si4O13 phosphors was studied in detail. The phosphors show intense absorption in near ultraviolet-blue region and exhibit intense red emissions with CIE coordinates of (0.66, 0.34) under 393 nm excitation. The integrated emission intensity of Ba-2(Gd0.4Eu0.6)(2)Si4O13 excited at 393 nm, 362 nm and 464 nm is about 3.5, 4.0 and 3.1 times as that of Y2O3:Eu3+ commercial phosphors, respectively. The excellent luminescent properties and good color saturation make it a promising red phosphor for white LEDs. (C) 2011 Optical Society of America
引用
收藏
页码：A201 / A206
页数：6
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