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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9149

Title: MECHANISM OF THERMOLUMINESCENCE IN CAF2EU AND CASO4EU PHOSPHORS
Authors: UPADEO, SV
GUNDURAO, TK
MOHARIL, SV
Keywords: electron-spin-resonance
Issue Date: 1994
Publisher: IOP PUBLISHING LTD
Citation: JOURNAL OF PHYSICS-CONDENSED MATTER, 6(44), 9459-9468
Abstract: CaF2:RE and CaSO4:RE are important phosphors. The phosphors corresponding to RE = Dy and Tm find applications in thermoluminescence dosimetry using ionizing radiations. Although these phosphors have been in use for several years, the mechanism of thermoluminescence in these phosphors is not well understood. The role of RE ions in emission has been clearly indicated. Two types of model have been proposed. In model l it is assumed that a hole recombines with a RE2+ ion to convert it into RE3+. Model 2 proposes that the energy of electron-hole recombination is transferred to the RE ion. Experimental results on CaSO4:Eu and CaF2:Eu are presented which show that model 2 is closer to reality.
URI: http://dx.doi.org/10.1088/0953-8984/6/44/024
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9149
http://hdl.handle.net/10054/9149
ISSN: 0953-8984
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