TSL, OSL and ESR studies ZnAl2O4:Tb phosphor

被引：37
|
作者：
Menon, Sanjeev [1 ]
Dhabekar, Bhushan [1 ]
Raja, E. Alagu [1 ]
More, S. P. [1 ]
Rao, T. K. Gundu [2 ]
Kher, R. K. [1 ]
机构：
[1] Bhabha Atom Res Ctr, Radiol Phys & Advisory Div, Bombay 400085, Maharashtra, India
[2] Indian Inst Technol, Reg Sophisticated Instrumentat Ctr, Bombay 400076, Maharashtra, India
来源：
JOURNAL OF LUMINESCENCE | 2008年 / 128卷 / 10期
关键词：
ZnAl2O4; thermoluminescence; optically stimulated luminescence; photoluminescence; electron spin resonance; V centre;
D O I：
10.1016/j.jlumin.2008.03.016
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
ZnAl2O4:Tb phosphor was prepared by combustion synthesis. ZnAl2O4:Tb exhibits three thermally stimulated luminescence (TSL) peaks around 150, 275 and 350 degrees C. ZnAl2O4:Tb exhibits optically stimulated luminescence (OSL) when stimulated with 470 nm light. Electron spin resonance (ESR) studies were carried out to identify defect centres responsible for TSL peaks observed in ZnAl2O4:Tb. Two defect centres are identified in irradiated ZnAl2O4:Tb phosphor and these centres are assigned to V and F+ centres. V centre appears to correlate with the 150 degrees C TSL peak, while F+ centre could not be associated with the observed TSL peaks. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1673 / 1678
页数：6
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