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Effect of UV irradiation on different types of luminescence of SrAl 2 O 4 :Eu,Dy phosphors
Author(s) -
Jha Piyush
Publication year - 2016
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.3105
Subject(s) - phosphor , mechanoluminescence , thermoluminescence , irradiation , luminescence , monoclinic crystal system , analytical chemistry (journal) , materials science , persistent luminescence , afterglow , intensity (physics) , chemistry , nuclear chemistry , mineralogy , optoelectronics , optics , crystallography , crystal structure , chromatography , physics , gamma ray burst , astronomy , nuclear physics
This paper reports the luminescence behavior of Sr 0.097 Al 2 O 4 :Eu 0.01 ,Dy 0.02 phosphors under UV‐irradiation. The effect of UV‐irradiation on afterglow (AG), thermoluminescence (TL) and mechanoluminescence (ML) of Sr 0.097 Al 2 O 4 :Eu 0.01 ,Dy 0.02 phosphors is investigated. The space group of Sr 0.097 Al 2 O 4 :Eu 0.01 ,Dy 0.02 phosphors is monoclinic P2 1 . The prepared phosphors exhibit a long AG, intense TL and ML. It is found that the AG, ML intensity and TL increase with increasing duration of irradiation time. The ML intensity decreases with successive impact of the load onto the phosphors, whereby the diminished ML intensity can be recovered by UV‐irradiation. Copyright © 2016 John Wiley & Sons, Ltd.