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

页码：205 / 210

页数：6