LiZnPO4:Tb3+,Ce3+greenphosphorswithhighefficiency

被引：4

作者：

欧阳春梅

马帅

饶阳

周新木

周雪珍

李永绣

机构：

[1] ResearchCenterforRareEarths&Micro/Nano-FunctionalMaterials,NanchangUniversity

来源：

JournalofRareEarths | 2012年 / 30卷 / 07期

关键词：

green phosphor; high luminescence efficiency; LiZnPO4:Tb3+; Ce3+; rare earths;

D O I：

暂无

中图分类号：

O614.3 [第Ⅲ族金属元素及其化合物];

学科分类号：

070301 ; 081704 ;

摘要：

Tb3+ and Ce3+ co-activated LiZnPO4 phosphors with high luminescence efficiency were synthesized by a high temperature solid-state reaction at 1000 oC for 3 h. The XRD patterns, photoluminescence spectra and SEM were recorded and the effects of Tb3+ and Ce3+ concentration, sintering condition on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet (200-300 nm) radiation showed a dominant peak at 543 nm attributed to the 5D4→7F5 transition of Tb3+, which was greatly en-hanced by the co-doping of Ce3+, indicating that there occurred an efficient non-radiative energy transfer from Ce3+ to Tb3+. The optimal dop-ing concentrations of Tb3+ and Ce3+ were determined to be 9% and 10%, respectively.

引用

页码：637 / 640

页数：4

共 7 条

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