Studies of impurity levels in Rh-doped and Ce-doped photorefractive BaTiO3

被引：0
|
作者：
H. Song
S.X. Dou
M. Chi
Y. Zhu
P. Ye
机构：
[1] Institute of Physics,
[2] Chinese Academy of Sciences,undefined
[3] Beijing 100080,undefined
[4] P.R. China (Fax: +86-10/6256-2605,undefined
[5] E-mail: user303@aphy.iphy.ac.cn),undefined
来源：
Applied Physics B | 2000年 / 70卷
关键词：
PACS: 42.65.Hw; 42.70.Nq;
D O I：
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学科分类号：
摘要：
Impurity levels, light-induced and thermo-induced charge transfer processes in Rh-doped and Ce-doped photorefractive BaTiO3 were studied. The thermal depths and optical transitions of these impurity levels in the crystals were determined by using such methods as light-induced absorption, thermo-induced absorption, and grating dark decay. The origins of these impurity levels were discussed. We demonstrated, for the first time to our knowledge, that thermo-induced absorption spectroscopy is a useful and complementary technique for investigating the impurity levels in photorefractive crystals. With this technique, the deep impurity level generated by Ce in BaTiO3:Ce was revealed and identified.
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页码：543 / 548
页数：5
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