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Observation of photobleaching and intensity dependent kinetics in Ge22As22Se56 thin films under sub-bandgap light illumination

Khan, Pritam and Batik, AR and Vinod, EM and Sangunni, KS and Adarsh, KV (2015) Observation of photobleaching and intensity dependent kinetics in Ge22As22Se56 thin films under sub-bandgap light illumination. In: International Conference on Materials Science and Technology (ICMST), JUN 10-14, 2012, Kerala, INDIA.

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Official URL: http://dx.doi.org/10.1088/1757-899X/73/1/012073

Abstract

We experimentally demonstrate photobleaching (PB) in Ge22As22Se56 thin films, when illuminated with a diode pumped solid state laser (DPSSL) of wavelength 671 nm, which is far below the optical bandgap of the sample. Interestingly, we found that PB is a slow process and occurs even at moderate pump beam intensity of 0.2 W/cm(2), however the kinetics remain rather different.

Item Type: Conference Proceedings
Additional Information: Copyright for this article is 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: 13 May 2015 07:32
Last Modified: 13 May 2015 07:32
URI: http://eprints.iisc.ac.in/id/eprint/51537

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