Optical effects induced by gamma and UV irradiation in chalcogenic glass

被引：41

作者：

Balboul, M. R. ^{[1
]}

机构：

[1] Natl Ctr Radiat Res & Technol, Nasr City, Cairo, Egypt

来源：

RADIATION MEASUREMENTS | 2008年 / 43卷 / 08期

关键词：

Chalcogenide glasses; gamma-Irradiation; UV-irradiation; Optical properties;

D O I：

10.1016/j.radmeas.2008.03.007

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：

The influence of gamma and UV irradiation on the optical properties of thin film chalcogenide glasses Ge15Se82.5Ag2.5 has been studied. An increase in the optical energy gap is observed after gamma-irradiation with an exposure dose higher than 100kGy and up to 1050kGy. The results of gamma-irradiation are discussed in terms of the structural aspects of Ge15Se82.5Ag2.5 glass system. Photo-induced changes of the optical properties by UV-irradiation are also analyzed. The observed changes are associated with the interaction of the incident photon and the lone-pairs electrons which affects the band gap of the Ge15Se82.5Ag2.5 system. The changes in band tail width of the localized state after irradiation with gamma or UV are found to have an opposite trend compared with the changes in the optical band gap. The X-ray structural characterization revealed the amorphous nature of the films before and after gamma and UV irradiation. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1360 / 1364

页数：5

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