Preparation and luminescent properties of (Ca1-xSr,)S:Eu2+ red-emitting phosphor for white LED

被引：261

作者：

Hu, YS

Zhuang, WD ^{[1
]}

Ye, HQ

Zhang, SS

Fang, Y

Huang, XW

机构：

[1] Gen Res Inst NonFerrous Met & Grirem Adv Mat Co L, Natl Engn Res Ctr Rare Earth Mat, Beijing 100088, Peoples R China

[2] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 111卷 / 03期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

white LED;

D O I：

10.1016/j.jlumin.2004.07.005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The (Ca1-x,Sr-x)S:Eu2+ red-emitting phosphors were prepared by using sulfide and sulfate in CO-reductive atmosphere, respectively, and their luminescent properties have been investigated. The XRD data showed that the doping of divalent Europium ion (Eu2+) enlarges the lattice parameters, and Sr/Ca ratio not only affects the lattice parameters, but also influences the emission peak. The excitation and emission spectra indicated that this phosphor can be effectively excited by visible light from 430 to 500 nm, and exhibits a satisfactory red performance. The annealing treatment process was also discussed in detail. Compared with the commercial afterglow sulfide phosphor, the present synthesized phosphor has higher emission efficiency and is a favorable choice for white light-emitting diode (LED). The white LED implanted by present phosphor shows desirable luminescence and chromaticity properties. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：139 / 145

页数：7

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