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• W4387573676 abstract "Double perovskite solar cells have attracted much attention for their low cost, high performance, environmental friendliness, and strong stability. In this study, the effect of thickness of perovskite layer, band offset, metal electrode work function, the thickness and doping concentration of the transport layer on the efficiency of Cs₂AgBi_0.75Sb_0.25Br₆ solar cells were analyzed using Silvaco TCAD to improve device performance. This initial study of device based on Spiro-OMeTAD as hole transport layer (HTL) and ZnO as electron transport layer (ETL), which shows a photovoltaic conversion efficiency (PCE) of 12.66%. The results show that the efficiency gradually saturates when the thickness of the perovskite layer is greater than 500 nm. The optimal conduction band offset (CBO) is from 0 eV to +0.5 eV, and the optimal valence band offset (VBO) is from -0.1 eV to +0.2 eV. After varying the device's ETL as ZnOS and HTLs as MoO₃, Cu₂O and CuSCN, respectively, and optimizing their thicknesses and doping concentrations. The final theoretical photovoltaic conversion efficiency of the double perovskite solar cell with a HTL of Cu₂O reaches 22.85%, which is a relative improvement of 25.6% over the currently reported theoretical efficiency value. Moreover, the optimal efficiency is achieved when the metal electrode work function is less than -4.9 eV. This work will help find suitable materials for the transport layer and provide guidance for the development of high-performance and lead-free perovskite solar cells." @default.
• W4387573676 created "2023-10-13" @default.
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• W4387573676 date "2024-01-01" @default.
• W4387573676 modified "2023-10-13" @default.
• W4387573676 title "Optimized design of Cs₂AgBi_0.75Sb_0.25Br₆ perovskite solar cell" @default.
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• W4387573676 doi "https://doi.org/10.7498/aps.73.20231299" @default.
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