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TSL, OSL and ESR studies ZnAl2O4 : Tb phosphor

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Title TSL, OSL and ESR studies ZnAl2O4 : Tb phosphor
 
Creator MENON, S
DHABEKAR, B
RAJA, EA
MORE, SP
RAO, TKG
KHER, RK
 
Subject combustion synthesis
zinc aluminate
fine-particle
znal2o4
thermoluminescence
optically stimulated luminescence
photoluminescence
electron spin resonance
v centre
 
Description 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
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-27T04:55:23Z
2011-12-26T12:53:38Z
2011-12-27T05:40:21Z
2011-07-27T04:55:23Z
2011-12-26T12:53:38Z
2011-12-27T05:40:21Z
2008
 
Type Article
 
Identifier JOURNAL OF LUMINESCENCE, 128(10), 1673-1678
0022-2313
http://dx.doi.org/10.1016/j.jlumin.2008.03.016
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7119
http://hdl.handle.net/10054/7119
 
Language en