Photoluminescence and thermoluminescence studies of CaAl 2 O 4 :Dy 3+  phosphor | Zendy

Ziyauddin Mohammad | Zendy; Tigga Shalinta | Zendy; Brahme Nameeta | Zendy; Bisen D. P. | Zendy

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Photoluminescence and thermoluminescence studies of CaAl 2 O 4 :Dy 3+ phosphor

Author(s) -

Ziyauddin Mohammad,

Tigga Shalinta,

Brahme Nameeta,

Bisen D. P.

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.2926

Subject(s) - thermoluminescence , phosphor , photoluminescence , analytical chemistry (journal) , materials science , doping , aluminate , mineralogy , luminescence , nuclear chemistry , chemistry , metallurgy , optoelectronics , cement , chromatography

Calcium aluminate phosphors activated by Dy 3+ have been prepared by a combustion method at a temperature of 600°C. Photoluminescence (PL) and thermoluminescence (TL) properties of gamma‐irradiated Dy‐doped calcium aluminate were investigated. The PL spectrum shows a broad peak around 488 nm and 573 nm, under 347 nm excitation. Thermoluminescence studies were performed for different concentrations of Dy. Optimum intensity of photoluminescence was found for 0.02 mol% concentration of Dy. It was found that initially the peak TL intensity increases with increasing concentration of Dy in the CaAl 2 O 4 host, attains a maximum value for 0.05 mol% concentration and decreases with further increase in the doping concentration due to concentration quenching. Copyright © 2015 John Wiley & Sons, Ltd.

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