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Progress on Eu~(2+)—Activated Alkaline Earth Aluminates Long Afterglow Phosphors

Guo Qingjie,Xu Mingxia,Cao Peiling (Tianjin University, Tianjin 300072, China)  
The fluorescence character of the Eu2+ as a kind of activator in the alkaline earth aluminates and the effect factors on the phosphorescent properties were discussed. The methods of preparing long afterglow phosphors based on aluminates and the mechanism were analyzed, and finally the application fields were also introduced.
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