Abstract
In2S3 thin films have been deposited onto glass substrates at 340 °C using an inexpensive spray pyrolysis method (CSP) via the reaction between high purity indium chloride and thiourea. Structural, optical and photoconductive properties of thin films have been investigated by adjusting S/In molar ratio. The X-ray diffraction results revealed that In2S3 films are polycrystalline and exhibited a cubic structure. The optical and morphological properties are discussed. The photoconductive performances were conducted by DC electrical characterization. The best photosensitivity was obtained for the film matching S/In = 2 molar ratio. In addition, photocurrent versus light intensity and bias voltage follows a power law and linear trend, respectively. Furthermore, some critical parameters such as responsivity and detectivity were determined to evaluate photosensitive properties of In2S3 thin films.
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Acknowledgements
This work was supported by Tunisian Ministry of Higher Education and Scientific Research, Spanish Ministry of Science and Innovation - FEDER Funds (MODENA Project CTQ2016-79461-R) and Fundación Ramón Areces (Spain, Project CIVP18A3940). NANOMAG group belongs to Galician Competitive Research Group ED431C-2017/22, program co-funded by FEDER, and AEMAT Strategic Partnership (ED431E-2018/08, Xunta de Galicia, Spain).
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Bchiri, Y., Souissi, R., Bouricha, B. et al. S/In molar ratio effect on the photoconductivity of the sprayed β-In2S3 thin films. J Mater Sci: Mater Electron 32, 27995–28006 (2021). https://doi.org/10.1007/s10854-021-07180-y
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DOI: https://doi.org/10.1007/s10854-021-07180-y