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Effect of laser irradiation on the optical properties of As40Sb15Se45 chalcogenide thin films

Naik, Ramakanta and Ganesan, R and Sangunni, KS (2015) Effect of laser irradiation on the optical properties of As40Sb15Se45 chalcogenide thin films. In: 6th International Conference on Optical, Optoelectronic and Photonic Materials and Applications (ICOOPMA), JUL 27-AUG 01, 2014, Leeds, ENGLAND.

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Official URL: http://dx.doi.org/10.1088/1742-6596/619/1/012042

Abstract

The exposure with band gap light of thermally evaporated As40Sb15Se45 amorphous film of 800 nm thickness, were found to be accompanied by optical changes. The as-prepared and illuminated thin films were studied by X-ray diffraction, Fourier Transform Infrared Spectroscopy and X-ray Photoelectron Spectroscopy and Raman spectroscopy. The optical band gap was reduced due to photo induced effects along with the increase in disorder. These optical properties changes are due to the change of homopolar bond densities. The core level peak shifting in XPS spectra and Raman shift supports the optical changes happening in the film due to light exposure.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 11 Aug 2015 09:58
Last Modified: 11 Aug 2015 09:58
URI: http://eprints.iisc.ac.in/id/eprint/52081

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