Long-lasting phosphorescence in Ce3+-doped Ca2Al2SiO7 and CaYAl3O7 crystals

被引：147
|
作者：
Kodama, N [1 ]
Takahashi, T
Yamaga, M
Tanii, Y
Qiu, J
Hirao, K
机构：
[1] Akita Univ, Fac Engn & Resource Sci, Dept Mat Sci & Engn, Akita 0108502, Japan
[2] Gifu Univ, Fac Engn, Dept Elect, Gifu 5011193, Japan
[3] JST, ERATO, Hirao Act Glass Project, Kyoto 6190237, Japan
[4] Kyoto Univ, Grad Sch Engn, Div Mat Chem, Kyoto 6068317, Japan
来源：
APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 12期
关键词：
D O I：
10.1063/1.124799
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Long-lasting phosphorescence is observed in Ce3+-doped Ca2Al2SiO7 (CASM) and CaYAl3O7 (CYAM) crystals at room temperature. UV irradiation at 365 nm produces broadband emissions with peaks at 417 nm for CASM and 425 nm for CYAM, which persist for not less than 1 h after the removal of the irradiating light. Based on the time dependence of the intensity of the phosphorescence, the long-lasting phosphorescence in these crystals is considered to be due to the electron-hole recombination at shallow traps, which occurs by a thermally activated process. (C) 1999 American Institute of Physics. [S0003-6951(99)02738-2].
引用
收藏
页码：1715 / 1717
页数：3
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