Simulation of Lead-Based Halide Perovskite Solar Cells

Abstract

Abstract: The multiple sulfides Cd_0.5Zn_0.5S and cuprous oxide Cu₂O have high carrier mobility, and their production processes are simpler than that of the traditional electron transport layer and hole transport layer. Therefore, these two materials have very good application potential in perovskite solar cells. The solar cells with Cd_0.5Zn_0.5S and Cu₂O as the transmission layer and lead-based halide perovskites as the absorption layer were simulated using SCAPS-1D software. The influence of material thickness, doping concentration and bandgap on the perovskite solar cells performance was studied. The results show that as the thickness of the absorber layer (CH₃NH₃PbI₃) increases, the cells performance gradually improves, but when it increases to a certain thickness, the cells performance decreases. The optimal thickness of the absorber layer is 400 nm. Moreover, when the defect state density of the absorbing layer is less than 1.0×10¹⁴ cm^-3, the defect state density has little influence on the cells performance. In addition, the bandgap of the absorber has important influence on the cells performance, and the best bandgap is about 1.5 eV. The best performance parameters for this solar cells are obtained as an open-circuit voltage of 1.010 V, a short-circuit current density of 31.30 mA/cm², a fill factor of 80.01%, and a conversion efficiency of 25.20%. Therefore, the Cu₂O/CH₃ NH₃PbI₃/Cd_0.5Zn_0.5S halide solar cell is a photovoltaic device with great development potential.

Key words: Cd_0.5Zn_0.5S, Cu₂O, lead-based halide, halide solar cell, conversion efficiency, SCAPS-1D, defect state density

CLC Number:

TM914.4

XIAO Jianmin, YUAN Jiren, WANG Peng, DENG Xinhua, HUANG Haibin, ZHOU Lang. Simulation of Lead-Based Halide Perovskite Solar Cells[J]. Journal of Synthetic Crystals, 2022, 51(6): 1051-1058.

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