Investigation of the trap state of Sr2MgSi2O7: Eu2+, Dy3+ phosphor and decay process

被引：40

作者：

Wu, Haoyi ^{[1
]}

Hu, Yihua ^{[1
]}

Wang, Xiaojuan ^{[1
]}

机构：

[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

RADIATION MEASUREMENTS | 2011年 / 46卷 / 6-7期

基金：

中国国家自然科学基金;

关键词：

Thermoluminescence; Decay; Phosphors; LUMINESCENT PROPERTIES; AFTERGLOW; ALUMINATE; CURVES;

D O I：

10.1016/j.radmeas.2011.04.023

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The thermoluminescence glow curves of Sr2MgSi2O7: Eu2+, Dy3+ phosphor were measured after various delay times. A single trap center is confirmed that conforms to a kinetics model with order greater than 1, leading to a suppression of TL intensity and a high temperature shift of the TL peak with longer delay times. A constant trap depth supports this phenomenon. Further, the decay curve of the afterglow and the change in initial trapped carrier concentration can be fitted using general-order kinetics and the fitting results show that the afterglow is close to a second-order kinetics process, which implies that most of the released carriers are retrapped. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：591 / 594

页数：4

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