Background illumination enhanced photo-stimulated up-conversion emission in persistent luminescent SrAl2O4:(Eu2+, Dy3+)

被引：9
|
作者：
Ji, Zhenguo [1 ]
Bao, Wenhao [1 ]
Mao, Qinan [1 ]
Xi, Junhua [1 ]
Kong, Zhe [1 ]
Zhang, Jun [1 ]
机构：
[1] Hangzhou Dianzi Univ, Lab Elect Mat & Devices, Hangzhou 310018, Zhejiang, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 09期
基金：
中国国家自然科学基金;
关键词：
SrAl2O4:(Eu2+; Dy3+); Photo-stimulated up-conversion; Background illumination; Band gap; PHOSPHORS; MECHANOLUMINESCENCE; SRAL2O4EU2+;
D O I：
10.1016/j.ceramint.2015.05.125
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Persistent luminescent SrAl2O4:(Eu2+, Dy3+) ceramics were prepared by electron beam bombardment and their photo-stimulated up-conversion property was investigated. It is found that the intensity of photo-stimulated up-conversion emission of SrAl2O4:(Eu2+, Dy3+) decays in the same way as that of the persistent luminescence under the continuous or pulsed excitation at 980 nm, while stable and enhanced photo stimulated up-conversion emission is observed with the background illumination of 475 nm light. A possible model is proposed to illustrate the enhanced photo stimulated up-conversion emission assisted by background illumination. Based on that model, the band gap of SrAl2O4:(Eu2+, Dy3+) is calculated from the excitation spectrum. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：11646 / 11650
页数：5
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