Photodarkening process in amorphous chalcogenideMeasurements of transient photo-induced optical absorption

被引：0
|
作者：
Y. Sakaguchi
K. Tamura
机构：
[1] Kyoto University,Graduate School of Engineering
来源：
Journal of Materials Science: Materials in Electronics | 2007年 / 18卷
关键词：
Pulse Laser; Structural Relaxation; Thermal Vibration; As2Se3; Slow Rise;
D O I：
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中图分类号：
学科分类号：
摘要：
We have investigated on photodarkening process in amorphous (a-) As2Se3 and As2S3 by means of photoinduced transient optical absorption measurement. To measure a change of optical absorption in the absorption edge, we used specially designed optical cells which prepared melt-quenched amorphous films with thicknesses of 0.6 μm for a-As2Se3 and 1.5 μm for a-As2S3. From the measurements, we observed accumulation of the photoinduced effect for illumination of repeated pulsed laser and a decay of the photo-induced change after stopping the illumination. We discuss the photodarkening process based on the experimental results.
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页码：459 / 462
页数：3
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