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

页码：1673 / 1678

页数：6

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