Electronic excitations of Sc3+ impurity in α-Al2O3 crystals

被引：0
|
作者：
B. R. Namozov
R. I. Zakharchenya
M. P. Korobkov
V. V. Mürk
机构：
[1] Russian Academy of Sciences,A. F. Ioffe Physicotechnical Institute
[2] Institute of Physics,undefined
来源：
Physics of the Solid State | 1998年 / 40卷
关键词：
Spectroscopy; State Physics; Absorption Band; Optical Property; Corundum;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Optical properties, including luminescence, of scandium-doped α-Al2O3 crystals have been studied in the VUV range. An absorption band associated with the scandium impurity was observed at the fundamental-absorption edge of crystalline corundum. A strong luminescence band peaking at 5.6 eV, which is most effectively excited within the 7.7–8.8-eV interval, was found. The kinetic and polarization characteristics of this luminescence were studied within the temperature range 6–500 K. An excitation model of the impurity complex and the mechanism of its relaxation are discussed.
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页码：599 / 600
页数：1
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