Abstract
BaSnO3 (BSO) could be becoming an important next-generation electron transport material in semiconductor technology due to its abnormal electrical properties even at room temperature. In this study, the reduced graphene oxide (RGO) in the BSO hybrid composites via the facile hydrothermal method reported new cost-effective platinum-free counter-electrodes (CEs) in dye-sensitized solar cells (DSSCs). The CEs were formed using the nanocomposites with the help of a pipette using a doctor blade technique. The efficiency of this nanocomposite revealed significant electrocatalytic properties upon falling the tri-iodide, possessing to synergistic effect of BSO nanoparticles and improved conductivity when BSO dispersed on RGO sheet. Therefore, the power conversion efficiency (PCE) of prepared BSO/RGO nanocomposite CE attained of (8.8 ± 0.01%) in DSSCs which is higher ha that of commercial Pt CE (6.28 ± 0.04%) as a reference. BSO/RGO nanocomposite CEs give more stable catalytic activities for tri-iodide reduction than BSO and RGO CEs in the cyclic voltammetry (CV) analysis. Furthermore, to the subsistence of RGO, the nanocomposite acquired both higher stability and efficiency in the nanocomposite.
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Acknowledgements
The author from KKU would like to express his appreciation to the Deanship of Scientific Research at King Khalid University for the financial support through the research groups program under Grant No. R.G.P.2/508/44.
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Deanship of Scientific Research, King Khalid University, through the research groups program under Grant No. R.G.P.2/508/44.
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AA and PMA contributed to conceptualization and writing (original draft) of the manuscript. MS, VB, VRMR, and WKK contributed to data curation, formal analysis, and comparison of PL intensities and XPS characteristics peaks in sequential manner.
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Ammasi, A., Munusamy, A.P., Shkir, M. et al. Design and fabrication of BaSnO3/RGO as efficient Pt-free counter electrode for dye-sensitized solar cells. J Mater Sci: Mater Electron 34, 2168 (2023). https://doi.org/10.1007/s10854-023-11540-1
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DOI: https://doi.org/10.1007/s10854-023-11540-1