Growth-temperature dependent physical properties of SnS nanocrystalline thin films

Reddy, Koteeswara N (2013) Growth-temperature dependent physical properties of SnS nanocrystalline thin films. In: ECS Journal of Solid State Science and Technology, 2 (6). P259-P263.

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Abstract

In this article we have demonstrated the influence of growth-temperature on the morphology and orientation of SnS films deposited by thermal evaporation technique. While increasing the growth-temperature, the morphology of SnS films changed from flakes-like nanocrystals to regular cubes, whereas their orientation shifted from <111> to <040> direction. The chemical composition of SnS films gradually changed from sulfur-rich to tin-rich with the increase of growth-temperature. The structural analyzes reveal that the crystal structure of SnS films probably changes from orthorhombic to tetragonal at the growth-temperature of about 410 degrees C. Raman studies show that SnS films grown at all temperatures consist of purely SnS phase, whereas the optical studies reveal that the direct optical bandgap of SnS films decreased with the increase of growth-temperature. From these results it has been emphasized that the morphology and orientation along with electrical and optical properties of nearly stoichiometric SnS films strongly depend on their growth-temperature.

Item Type:	Journal Article
Publication:	ECS Journal of Solid State Science and Technology
Publisher:	Electrochemical Society Inc
Additional Information:	Copyright of this article belongs to Electrochemical Society Inc.
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	15 Jul 2013 09:58
Last Modified:	15 Jul 2013 09:58
URI:	http://eprints.iisc.ac.in/id/eprint/46880

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