Abstract
Undoped, Sn3+-doped, and Sn3+/Zn2+-codoped In2O3 films were synthesized using a time- and cost-efficient spin-coating technique. XRD analysis confirms that all films crystallize in a single cubic bixbyite phase. Morphological and roughness changes associated to Sn3+/Zn2+-doping are revealed by both AFM and SEM analysis, while FTIR and XRF analysis confirm the incorporation of Sn3+/Zn2+ into the In-sub lattice of the In2O3 structure. UV–Vis. analysis demonstrates that the doping shifts the absorption edge towards longer wavelengths, widens the Urbach’s tail and reduces the gap energy. Room-temperature photoluminescence (PL) spectra display four main bands, their intensities decreasing upon doping. EIS analysis proves that the doping and codoping decreases the electrical impedance of the films. Moreover, the introduction of Sn3+/Zn2+ into the In2O3 lattice enhances the photo-degradation of methylene blue (MB), finally, a proposed photocatalytic mechanism is presented.
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The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was financially supported by the University of Science and Technology Houari Boumediene-Algiers. The author H. Gueddaoui would like to thank Doctor Abdelmounaim Chetoui, a researcher at the Research Center in Semi-conductor Technology for Energetics (CRTSE) in Algeria, for his contributions to photoluminescence spectroscopic measurements.
Funding
This study funded by the Ministry of Higher Education and Scientific Research and the General Directorate of Scientific Research and Technological Development-Algeria.
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MG: PhD student, experimental part and elaboration of films. RB: Photocatalysis part, results interpretation and writing. HG: Director of the work, results interpretation and writing. NM: Equipment of the photocatalysis. MRK: AFM analysis. LO: Electrochemical measurements. SR: Stability study.
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Ghemid, M., Bourzami, R., Gueddaoui, H. et al. Study of spin-coated undoped, Sn3+ doped and Sn3+/Zn2+-codoped In2O3 films and their photocatalytic activity performance. J Mater Sci: Mater Electron 34, 2296 (2023). https://doi.org/10.1007/s10854-023-11696-w
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DOI: https://doi.org/10.1007/s10854-023-11696-w