Enhanced photoluminescence property of Dy3+ co-doped BaAl2O4:Eu2+ green phosphors

Eu2+-doped BaAl2O4 green phosphors were prepared by a conventional solid-state reaction and the effects of Dy3+ co-doping on the photoluminescence were investigated. The phosphors were characterised by XRD, XRF, FESEM and XPS. XRD showed that all prepared samples exhibited a hexagonal BaAl2O4 phase....

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Bibliographic Details
Published in:Ceramics international 2012-01, Vol.38 (1), p.443-447
Main Authors: Roh, H-S, Cho, I-S, An, J-S, Cho, C M, Noh, T H, Yim, D K, Kim, D-W, Hong, K S
Format: Article
Language:English
Subjects:
Ceramics
Cobalt
Fluorescence
Phosphors
Photoluminescence
Quenching
Spectroscopy
X-ray photoelectron spectroscopy
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Summary:Eu2+-doped BaAl2O4 green phosphors were prepared by a conventional solid-state reaction and the effects of Dy3+ co-doping on the photoluminescence were investigated. The phosphors were characterised by XRD, XRF, FESEM and XPS. XRD showed that all prepared samples exhibited a hexagonal BaAl2O4 phase. Fluorescence spectroscopy showed that the photoluminescence efficiency increased with increasing Eu2+ concentration until 3 mol% then decreased at higher concentrations due to concentration quenching effect. Moreover, Dy3+ co-doping increased the photoluminescence efficiency of the Eu2+-doped BaAl2O4 phosphor.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2011.07.025