Hydrothermal synthesis of SrAl_2O_4: Eu~(2+) ,Dy~(3+)Long Afterglow Material
Li Dong-ping 1 Miao Chun-yan 2 (1.Department of chemistry, Hengyang Normal University Hengyang, 421008; 2. Department of material, Tsinghua University, Beijing, 110084)
A new synthesis method of SrAl 2O 4: Eu 2+ , Dy 3+ Phosphorescent Material is introduced in this paper. The precursor of this phosphor was prepared by hydrothermal method firstly; then it was sintering under high temperature and reductive air. The excitation spectrum, emission spectrum and long afterglow phosphorescent property have been measured. The long afterglow property of SrAl 20 4: Eu 2+ , Dy 3+ Phosphorescent Material prepared by hydrothermal method and complex-precipitation method were also compared in this paper.