Chemical Spray Pyrolysis pure and Transition Metal doped Structural, Morphological and Optical properties of SnS Thin Films

S.Selvi ¹ , M.Karunakaran ² , K.Kasirajan ³

Section:Research Paper, Product Type: Isroset-Journal
Vol.7 , Issue.3 , pp.11-16, Jun-2019

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i3.1116

Online published on Jun 30, 2019

Copyright © S.Selvi, M.Karunakaran , K.Kasirajan . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Cadmium doped tin sulfide (SnS) is a promising low cost photovoltaic material for its direct optical band gap (~ 1.4 eV). In this report cadmium doped tin sulfide thin films were prepared by chemical spray Pyrolysis method. The precursor solution cadmium chloride, tin chloride and thiourea are dissolved in de-ionized water. All the deposited films are characterized by different technique such as structural, morphological and optical properties have been studied. The XRD pattern the films are polycrystalline in nature and orthorhombic structure. The average particle size decreased with increasing transition metal doping concentration. SEM image reveals the cornflake shape. The FTIR spectrum used to confirm the functional group of 569 cm-1 Sn-S bond. The optical transmission spectra of transition metal doped SnS thin films the average transmission 60% in the visible region, the doping level increase the optical band gap values also increased from 1.4- 1.7 eV. PL spectra of all samples exhibited a broad emission in the visible range.

Key-Words / Index Term :
Sulfide, Transition Metal, XRD, Cornflake shape, Band gap

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