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Experimental and theoretical study of mechanoluminescence and lyoluminescence of Li 3 PO 4 : RE (RE=Dy and Tb) phosphors
Author(s) -
Sahu A. K.,
Kadukar Monali R.,
Chowdhary P. S.,
Nayar V.,
Dhoble S. J.
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2663
Subject(s) - mechanoluminescence , phosphor , thermoluminescence , ionizing radiation , materials science , charge carrier , diffusion , radiation , solid state , analytical chemistry (journal) , chemistry , irradiation , optoelectronics , physics , optics , nuclear physics , luminescence , environmental chemistry , thermodynamics
Li 3 PO 4 phosphors prepared by solid‐state diffusion technique and lyoluminescence (LL) as well as mechanoluminescence (ML) studies are reported. Dy‐ and Tb‐activated phosphors show dosimetric characteristics using LL and ML techniques. The energy levels and hence trapping and detrapping of charge carriers in the material can be studied using ML. Li 3 PO 4 phosphor can be used in the dosimetric applications for ionizing radiation. By using the LL technique, the LL characteristics of Li 3 PO 4 may be useful for high radiation doses. We also report a more detailed theoretical understanding of the mechanism of LL and ML. Copyright © 2014 John Wiley & Sons, Ltd.