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IJPAP Vol.47(06) [June 2009] >


Title: Thermoluminescence, optically stimulated luminescence and ESR studies on LiAl5O8:Tb
Authors: Dhabekar, Bhushan
Raja, E Alagu
Rao, T K Gundu
Kher, R K
Bhatt, B C
Keywords: Thermoluminescence
Optically stimulated luminescence
ESR
Phosphor
Issue Date: Jun-2009
Publisher: CSIR
Abstract:  The LiAl5O8:Tb phosphor has been prepared by solution combustion synthesis. LiAl5O8:Tb shows two TL peaks at 160 and 330°C, respectively. Continuous Wave OSL (CW-OSL) of LiAl5O8:Tb phosphor is recorded. ESR studies have been carried out to identify defect centres responsible for TL peaks observed in LiAl5O8:Tb. Room temperature ESR spectra of irradiated LiAl5O8:Tb phosphor exhibit two distinct centres. The first ESR line is assigned to a V-centre. The second ESR line is assigned to F+ centre. Both the ESR lines appear to correlate with the 160°C TL peak of LiAl5O8:Tb phosphor.
Page(s): 426-428
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.47(06) [June 2009]

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