Process of Photoluminescence and Photostimulated Luminescence in BaFBr:Eu Phosphors

材料科学技术（英）, 1995, 11(5): 388-390.

Process of Photoluminescence and Photostimulated Luminescence in BaFBr:Eu Phosphors

Wei CHEN (Lab. of Semiconductor Mater. Sci. , Institute of Semiconductor , Chinese Academy of Sciences , Beijing , 100083 , China)(To whom correspondence should be addressed)Mianzeng SU(Dept. of Chemistry , Peking University , Beijing , 100871 , China)

The photoluminescence (PL) and photostimulated luminescence (PSL) of BaFBr:Eu phosphors are reported. In the photoluminescence of BaFBr:Eu, the emission of Eu2+ , e-h recombination and Eu3+ have been observed, while in the photostimulated luminescence only the emission of Eu2+ was observed. This phenomenon may be explained well by the suggestion of a two-band model for the host emission in which the host emission energy may transfer to Eu2+. The difference of excitation in those two processes results in different transfer rates which makes the PL and PSL emission different.

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Process of Photoluminescence and Photostimulated Luminescence in BaFBr:Eu Phosphors

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