Mechanism of long phosphorescence of SrAl2O4:Eu2+, Dy3+ and CaAl2O4:Eu2+, Nd3+

被引：504
|
作者：
Yamamoto, H [1 ]
Matsuzawa, T [1 ]
机构：
[1] NEMOTO & CO LTD,SUGINAMI KU,TOKYO 168,JAPAN
来源：
JOURNAL OF LUMINESCENCE | 1997年 / 72-4卷
关键词：
phosphorescence; aluminates; photoconductivity;
D O I：
10.1016/S0022-2313(97)00012-4
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The intense and long-lasting phosphorescence of SrAl2O4:Eu2+,Dy3+ and CaAl2O4:Eu2+,Nd3+ is produced by holes thermally released from the trap levels formed by Dy3+ or Nd3+, which has the optimum trap depth. Photoconductivity measurements show that the holes are supplied from the Eu2+ centers during the 4f --> 5d excitation with a low activation energy.
引用
收藏
页码：287 / 289
页数：3
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