Optical properties change in amorphous (As2S3)(0.87)Sb-0.13 thin films by photo and thermal induced process

Naik, Ramakanta and Ganesan, R and Sangunni, KS (2011) Optical properties change in amorphous (As2S3)(0.87)Sb-0.13 thin films by photo and thermal induced process. In: Materials Chemistry and Physics, 125 (3). pp. 505-509.

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Abstract

Exposure with above band gap light and thermal annealing at a temperature near to glass transition temperature, of thermally evaporated amorphous (As2S3)(0.87)Sb-0.13 thin films of 1 mu m thickness, were found to be accompanied by structural effects, which in turn, lead to changes in the optical properties. The optical properties of thin films induced by illumination and annealing were studied by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. Photo darkening or photo bleaching was observed in the film depending upon the conditions of the light exposure or annealing. These changes of the optical properties are assigned to the change of homopolar bond densities. (C) 2010 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Materials Chemistry and Physics
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Chalcogenides; Thin films; Annealing; Fourier transform infrared spectroscopy (FTIR); Optical properties
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	25 Mar 2011 06:14
Last Modified:	25 Mar 2011 06:14
URI:	http://eprints.iisc.ac.in/id/eprint/35996

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