Abstract
This study concerns the synthesis of the Ag2SnS3 phase on a molybdenum (Mo) substrate, using the coelectrodeposition-sulfurization process by adjusting the [Ag+] at 0.01 M. XRD, Raman, UV–visible and electrochemical analyses have shown that Ag2SnS3/Mo films have been well elaborated with remarkable properties for practical applications. Optically, when [Ag+] was varied between 0.01 and 0.02 M, Ag2SnS3 films present a bandgap change in the range 1.20–1.36 eV, with an absorption coefficient of around 10–4 cm−1. Whereas the DFT → GGA calculation was implemented as a confirmatory theoretical study of the semiconductor and optical aspects of this Ag2SnS3 compound whilst comparing results with experiment. A further attractive property was demonstrated here by an electrochemical study of Ag2SnS3/Mo in Na2SO4 (1 M) under the (− 900, 100) mV/SCE potential window. More specifically, cyclic-voltammetry analysis has highlighted its pseudo-capacitor character with a developed specific capacitance of 800 F g−1, while galvanostatic charge–discharge shows a drop of around 35% when the current is reduced from 0.5 to 3 mA.
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M. Oubakalla: Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Writing—original draft, Writing—review & editing. A. El-Habib: Writing—original draft, Data curation, Formal analysis, Software, Investigation, Validation. M. Beraich: Methodology, Resources, Supervision, Validation, Writing—review & editing. M. El Bouji: Methodology, Resources, Supervision, Validation, Writing—review & editing. Y. Nejmi: Methodology, Resources, Supervision, Validation, Writing—review & editing. M. Ebn Touhami: Funding acquisition, Methodology, Resources, Supervision, Validation, Writing—review & editing. M. Taibi: Methodology, Resources, Supervision, Validation, Writing—review & editing. A. Zarrouk: Funding acquisition, Project administration, Resources, Supervision, Validation, Writing—review & editing. M. Fahoume: Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Writing—review & editing.
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Oubakalla, M., El-Habib, A., Beraich, M. et al. Co-electrodeposited Ag2SnS3/Mo thin films: optical and electrochemical study: DFT complement. J Mater Sci: Mater Electron 35, 1729 (2024). https://doi.org/10.1007/s10854-024-13487-3
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DOI: https://doi.org/10.1007/s10854-024-13487-3