Effect of substrate temperature on the optoelectronic properties of chemically sprayed SnS thin films. (2021)

• Record Type: Journal Article
• Authors: Mohan, Visakh V.; Akshaya, K.C.; Asha, A.S.; Jayaraj, M.K.; Vijayakumar, K.P.
• Is Part Of: Materials today. Volume 39:Part 5(2021)
• Page Start: 1978
• Page End: 1980
• Publication Date: 2021
• Subjects: Chemical spray pyrolysis -- Phase formation -- Photo voltaic materials -- Substrate temperature; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.08.512
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Tin Sulphide (SnS) thin films were deposited on glass substrate through chemical spray pyrolysis (CSP). Precursor solution was prepared by mixing stannous chloride and thiourea in the ratio 1:4. Influence of substrate temperature was studied. Pure SnS phase was obtained for an optimised deposition temperature of 280 °C. Substrate above and below 280 °C resulted in the formation of other phases such as SnS2, Sn2 S3 . Structural, electrical and optical properties of the films were determined using X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and UV–VIS-NIR spectrophotometer. The XRD pattern of the film at the optimized condition exhibited polycrystalline orthorhombic structure of SnS with preferential orientation along (1 1 1) plane. The prepared thin films have optical absorption coefficient >10 4 cm −1 in the wavelength rage of 400–800 nm. Phase purity was determined by Raman analysis, which confirmed the formation of single phase SnS film. In this study we could optimise deposition temperature to get SnS with single phase, avoiding unwanted phases like Sn2 S3, SnS2 and Sn3 S4 .