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Ensuring The Homogeneity OF Spray Pyrolised SnS Thin Films Employing XPS Depth Profiling

Sajeesh, T H and Deepa, K G and Vijayakumar, K P (2017) Ensuring The Homogeneity OF Spray Pyrolised SnS Thin Films Employing XPS Depth Profiling. In: 61st DAE-Solid State Physics Symposium, DEC 26-30, 2016, KIIT Univ, Bhubaneswar, INDIA.

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Official URL: http://doi.org/10.1063/1.4980489

Abstract

SnS thin films were prepared using chemical spray pyrolysis (CSP) technique. p-type SnS films with direct band gap of 1.33 eV and having very high absorption coefficient were obtained with the optimized deposition conditions. In this paper we focus on investigating the uniformity and phase purity of the hence deposited SnS films employing Raman and X-ray Photoelectron Spectroscopy (XPS) analysis. Raman Spectra of the films had only single peak corresponding to the Raman active Ag mode at 224 cm(-1) which is characteristic for phase-pure SnS thin films. Detailed XPS analysis on these samples were performed by scanning the peaks for Sn, S, and O with high resolution to estimate the chemical states and composition. Employing Ar-ion sputtering, the depth profiles showing variation in concentration and binding energies of S, Sn, O over the sample thickness were obtained and the uniformity in composition along the thickness has been discussed in detail.

Item Type: Conference Proceedings
Additional Information: Copyright of this article belongs to AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Id for Latest eprints
Date Deposited: 11 Nov 2017 05:43
Last Modified: 11 Nov 2017 05:43
URI: http://eprints.iisc.ac.in/id/eprint/58238

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