Compositional dependence optical properties study of As40Se60−xSbx thin films

Naik, Ramakanta and Arpitha Jain and Ganesan, R. and Sangunni, K. S. (2012) Compositional dependence optical properties study of As40Se60−xSbx thin films. Thin Solid Films, 520 (7). 2510 - 2513. ISSN 0040-6090

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Thin films were thermally evaporated from the bulk glasses of As40Se60−xSbx (with x=0, 5, 10, 15at.) 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 Eo decreases while the width of localized states (Urbach energy) Ee increases.

Item Type: Article
Uncontrolled Keywords: Chalcogenides, Thin films, Optical properties, FTIR
Subjects: D Physical Science > Physics
Divisions: Department of > Physics
Depositing User: C Swapna Library Assistant
Date Deposited: 24 Jul 2019 06:24
Last Modified: 24 Jul 2019 06:24

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