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ELECTRON-SPIN-RESONANCE, THERMOLUMINESCENCE AND FLUORESCENCE STUDIES ON BASO4-EU AND BASO4-EU, P THERMOLUMINESCENT PHOSPHORS

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Title ELECTRON-SPIN-RESONANCE, THERMOLUMINESCENCE AND FLUORESCENCE STUDIES ON BASO4-EU AND BASO4-EU, P THERMOLUMINESCENT PHOSPHORS
 
Creator RAO, TKG
SHINDE, SS
BHATT, BC
SRIVASTAVA, JK
NAMBI, KSV
 
Subject tld phosphors
luminescence
caso4-dy
charge
spectroscopy
excitation
crystals
 
Description The paramagnetic radicals formed in the TL phosphors BaSO4:Eu and BaSO4:Eu, P have been studied using the technique of ESR. Two radicals, assigned to SO2-, were observed at room temperature. One of them exhibits a hyperfine interaction with a nearby cation. Step annealing measurements suggest a connection between these radicals and the TL glow peaks at 170 and 215 degrees C. Co-doping BaSO4:Eu with phosphorus enhanced its TL efficiency. ESR and fluorescence emission measurements indicate that the enhancement results from an increased intake of divalent europium into the lattice.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-03T17:08:02Z
2011-12-26T12:54:18Z
2011-12-27T05:42:00Z
2011-08-03T17:08:02Z
2011-12-26T12:54:18Z
2011-12-27T05:42:00Z
1995
 
Type Article
 
Identifier JOURNAL OF PHYSICS-CONDENSED MATTER, 7(32), 6569-6581
0953-8984
http://dx.doi.org/10.1088/0953-8984/7/32/022
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9095
http://hdl.handle.net/10054/9095
 
Language en