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Compositional dependence optical properties study of As40Se60-xSbx thin films

Naik, Ramakanta and Jain, Arpitha and Ganesan, R and Sangunni, KS (2012) Compositional dependence optical properties study of As40Se60-xSbx thin films. In: THIN SOLID FILMS, 520 (7). pp. 2510-2513.

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Official URL: http://dx.doi.org/10.1016/j.tsf.2011.10.029


Thin films were thermally evaporated from the bulk glasses of As40Se60-xSbx (with x = 0, 5, 10, 15 at.%) under high vacuum. We have characterized the deposited films by Fourier Transform Infrared spectroscopy. The relationship between the structural and optical properties and the compositional variation has been investigated. Increasing Sb content was found to affect the thermal and optical properties of these films. Non-direct electronic transition was found to be responsible for the photon absorption inside the investigated films. It was found that, the optical band gap E-o decreases while the width of localized states (Urbach energy) E-e increases. (C) 2011 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Publisher: Elsevier
Additional Information: Copyright for this article belongs to Elsevier
Keywords: Chalcogenides;Thin films;Optical properties;FTIR
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 18 Jul 2012 05:40
Last Modified: 18 Jul 2012 05:40
URI: http://eprints.iisc.ac.in/id/eprint/44552

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