Optical absorption spectra of 10-MeV electron-irradiated paratellurite single crystals

被引：0
作者：
Azhniuk, YM [1 ]
Gomonnai, AV [1 ]
Goyer, DB [1 ]
Holovey, VM [1 ]
Megela, IG [1 ]
Lopushansky, VV [1 ]
机构：
[1] Ukrainian Natl Acad Sci, Inst Electron Phys, UA-284016 Uzhhorod, Ukraine
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2001年 / 153卷 / 03期
关键词：
absorption; Urbach absorption edge; vacancy; annealing;
D O I：
10.1080/10420150108211839
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Optical absorption spectra of TeO2 crystals, irradiated at room temperature by up to 2.10(18) cm(-2) 10-MeV electrons and subsequently annealed to 575 K, are studied. The dependence of Urbach absorption edge parameters in TeO2 on the electron beam fluence is discussed. The irradiation-induced near-edge broad (2.5-3.5 eV) absorption band is shown to be related to oxygen vacancies, annealing at 475-525 K.
引用
收藏
页码：205 / 210
页数：6
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