Luminescent properties of red phosphors K2Ba(MoO4)2:Eu3+ for white light emitting diodes

被引：15

作者：

Li Zhaomei ^{[1
]}

Zhong Yingjuan ^{[1
]}

Gao Shaokang ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2012年 / 30卷 / 10期

关键词：

K2Ba(MoO4)(2):Eu3+; red phosphor; luminescence; charge compensations; rare earths; PHOTOLUMINESCENCE; SM3+;

D O I：

10.1016/S1002-0721(12)60166-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

K2Ba(MoO4)(2):Eu3+ phosphors were synthesized by solid-state reaction. The emission and excitation spectra of K2Ba(MoO4)(2):Eu3+ phosphors exhibited that the phosphors could be effectively excited by near ultraviolet (394 nm) and blue (465 nm) light, and emitted red light at 616 nm. The influence of Eu3+ concentration, sintering temperature and charge compensators (K+, Na+ or Li+) on the emission intensity were investigated. The results indicated that concentration quenching of Eu3+ was not observed within 30 mol.% Eu3+, 600 degrees C was a suitable sintering temperature for preparation of K2Ba(MoO4)(2):Eu3+ phosphors, and K+ ions gave the best improvement to enhance the emission intensity. The CIE chromaticity coordinates of K2Ba(MoO4)(2):0.05Eu(3+) phosphor were calculated to be (0.68, 0.32), and color purity was 97.4%.

引用

页码：990 / 994

页数：5

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