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Electronic excitations of Sc3+ impurity in α-Al2O3 crystals

被引：4
|
作者：
Namozov, BR [1 ]
Zakharchenya, RI
Korobkov, MP
Murk, VV
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
[2] Estonian Acad Sci, Inst Phys, EE-202400 Tartu, Estonia
来源：
PHYSICS OF THE SOLID STATE | 1998年 / 40卷 / 04期
关键词：
Spectroscopy; State Physics; Absorption Band; Optical Property; Corundum;
D O I：
10.1134/1.1130360
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Optical properties, including luminescence, of scandium-doped alpha-Al2O3 crystals have been studied in the VUV range. An absorption band associated with the scandium impurity 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. (C) 1998 American Institute of Physics.
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收藏
页码：599 / 600
页数：2
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