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

被引：59

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

页码：A201 / A206

页数：6

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