Optimized photoluminescence by charge compensation in a novel phosphor system

被引：34

作者：

Chen, Yong-jie ^{[1
]}

Cao, Fa-bin ^{[1
,2
]}

Tian, Yan-wen ^{[2
]}

Xiao, Lin-jiu ^{[1
]}

Li, Lang-kai ^{[1
]}

机构：

[1] Shenyang Inst Chem Technol, Sch Chem Engn, Shenyang 110142, Peoples R China

[2] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 01期

关键词：

Red-emitting phosphors; LED; Charge compensation; LIGHT EMITTING DIODES; RED PHOSPHORS; LUMINESCENCE; NAEU(MOO4)(2);

D O I：

10.1016/j.physb.2009.08.308

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A series of red phosphors, Ca0.54Sr0.22Eu0.08La0.08 (MoO4)(x)(WO4)(1-x) with charge compensation, were synthesized by solid-state reaction. Three approaches to achieve charge compensation are tried: (a) 2Sr(2+)-> Eu3+/La3++M+, where M+ is a monovalent cation like Li+, Na+ or K+ acting as charge compensator; (b) charge compensation is provided by calcium vacancy, 3Sr(2+)-> 2Eu(3+)/La3+ +vacancy; (c)Sr2+-> Eu3+/La3+ +N-, where N- is a monovalent anion like Cl-. Charge compensation is a good way in obtaining potential red-emitting candidates for the white LED. These phosphors can be efficiently excited by 394, 465 and 535 nm, which are suitable with the emission of n-UV LED and blue LED. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：435 / 438

页数：4

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