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ESR and thermoluminescence studies of bismuth doped calcium sulphide phosphors

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Title ESR and thermoluminescence studies of bismuth doped calcium sulphide phosphors
 
Creator TIWARI, M
SINGH, V
RAO, TKG
DHOBLE, SJ
 
Subject cas
electron spin resonance
thermoluminescence
cas phosphor
defect centre
 
Description Thermally simulated luminescence (TSL) and electron spin resonance (ESR) studies were carried out on bismuth doped CaS phosphor synthesized by using solid-state reaction technique. The defect centers formed in CaS:Bi were studied using the technique of electron spin resonance. The thermaluminescence glow curve shows two peaks at about 400 and 505 K. Irradiated CaS:Bi exhibits ESR lines due to defect centers. Thermal annealing behaviour of the phosphor indicates that one of the defect centres correlates with the TSL peaks at 400 and 505 K. The center is characterized by an isotropic g-value of 2.0034 and is assigned to a F+ center.
 
Publisher NATL INST SCIENCE COMMUNICATION
 
Date 2011-08-19T04:38:37Z
2011-12-26T12:56:03Z
2011-12-27T05:44:11Z
2011-08-19T04:38:37Z
2011-12-26T12:56:03Z
2011-12-27T05:44:11Z
2004
 
Type Article
 
Identifier INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 42(5), 323-325
0019-5596
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10229
http://hdl.handle.net/10054/10229
 
Language en