Phase structure and temperature dependent luminescence properties of Sr2LiSiO4F:Eu2+ and Sr2MgSi2O7:Eu2+ phosphors

被引：0

作者：

夏志国 ^{[1
]}

孙家跃 ^{[2
]}

廖立兵 ^{[1
]}

杜海燕 ^{[2
]}

机构：

[1] School of Materials Sciences and Technology, China University of Geosciences

[2] College of Chemistry and Environmental Engineering, Beijing Technology and Business University

来源：

Journal of Rare Earths | 2010年 / 28卷 / 06期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

chlorosilicate; white LED; phosphor; rare earths;

D O I：

暂无

中图分类号：

O614.33 [镧系元素（稀土元素）];

学科分类号：

070301 ; 081704 ;

摘要：

Green-emitting Sr2LiSiO4F:Eu2+ and blue-emitting Sr2MgSi2O7:Eu2+ phosphors were synthesized by the conventional high temperature solid-state route, respectively. Their structures and photoluminescence properties were comparatively investigated. It was found that the mixture phases of Sr2MgSi2O7 and SrF2 were obtained when a part of Sr2+ in Sr2LiSiO4F was replaced by some amount of Mg2+ in order to design the possible SrMgLiSiO4F:Eu2+ phosphor. Based on the photoluminescence analysis, Sr2LiSiO4F:Eu2+ phosphor exhibited a green broad emission band of main peak at 513 nm under the excitation of 365 nm, while the Sr2MgSi2O7:Eu2+ and SrMgLiSiO4F:Eu2+ phosphor showed blue emission centered at 467 nm. The temperature dependent photoluminescence properties and room temperature decay time for the three kinds of phosphors were also discussed in this paper.

引用

页码：874 / 877

页数：4

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