Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5398384 | Journal of Luminescence | 2016 | 5 Pages |
Abstract
In this paper, La1.45Ce0.05Ba3.5(SiO4)1.5(PO4)1.5F compound with apatite structure was synthesized via solid state reaction method. The phosphor exhibits two strong excitation bands at 279Â nm and 345Â nm in near ultraviolet light region. When excited at 345Â nm, the emission peaks of the phosphor give a red-shift from 406Â nm to 418Â nm compared with that of 279Â nm excitation. Besides, the site occupation of Ce3+ was proposed based on structure refinement, luminescence, fluorescence decay curves, as well as CIE diagram. All the results indicated that Ce3+ can occupy sites of La3+ with nine and seven coordination and a possible mechanism was proposed to explain the luminescence properties observed.
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Authors
Qingfeng Guo, Libing Liao, Haikun Liu, Lefu Mei,