γ-Irradiation effects on the optical properties of amorphous Ge10As30Se60 thin films

被引：19
|
作者：
Amin, G. A. M. [1 ]
机构：
[1] Comenius Univ, Dept Expt Phys, FMFI, SK-84215 Bratislava, Slovakia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 19期
关键词：
Chalcogenides; Amorphous; gamma-Irradiation; Optical properties; GLASSES; AG;
D O I：
10.1016/j.nimb.2009.07.004
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Amorphous Ge10As30Se60 thin films on glass substrates were prepared by thermal evaporation method. The effect of gamma-irradiation on the optical properties of the amorphous Ge10As30Se60 thin films was studied in the spectral range from 200 nm to 1100 nm. gamma-Radiation-induced bleaching was observed after irradiation of the samples for doses up to 50 kGy. An increase in transmission and a shift in the (transmission) absorption edge towards higher energies were observed with the irradiation dose. An increase in the optical energy gap with irradiation dose was also observed in the studied range. Photo-bleaching due to gamma-irradiation was discussed in light of the structural aspects and configurational-coordinate model for Ge-As-Se. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3333 / 3336
页数：4
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