All Inorganic Cesium-Based Dual Light Absorber For Efficiency Enhancement In Solar Cells

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发表日期：

2024年12月5日

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Sagar Bhattarai,
Prakash Kanjariya,
K. S. Kiran,
Rohan Sharma,
Sachin Jaidka,
Nikhil Shrivastav,
Ayush Tara,
Jaya Madan,
Pratap Kumar Dakua,
Ismail Hossain,
Rahul Pandey

摘要

Over the past few years, researchers have increasingly focused on lead-free perovskite solar cells (PSCs) for the promising photovoltaic (PV) characteristics. This study presents a comparative analysis of the performance of two configurations of lead-free PSCs: ITO/ZnO/Cs₂AgBiI₆/Spiro-OMeTAD/Ag and ITO/ZnO/Cs₂AgBiI₆/Cs₂AgBiI₆/Spiro-OMeTAD/Ag. Compared to methylammonium (MA)--based PSCs, Cs₂AgBiI₆-based PSC demonstrates superior performance parameters. Optimization of the defect density and thickness of the perovskite layer has been done followed by the optimization of parameters of charge transport layers. Moreover, the series resistance is also been incorporated in the presented device structure to study its impact on the performance. Finally, the optimised solar cell structure yielded enhanced output device parameters with a J_SC of 32.22 mA/cm², V_OC of 1.09 V, FF of 84.49%, and PCE of 29.72%. These findings highlight the potential of Cs₂AgBiI₆-based PSCs as a promising contender for lead-free next-generation emerging photovoltaics in solar energy technology.