Efficiency Approaching 26% in Triple Cation Mixed Halide Perovskite Solar Cells by Numerical Simulation

Triple cation mixed halide perovskite solar cells have exhibited a great deal of interest and could be the potential candidate with an enhanced power conversion efficiency (PCE) as compared to conventional perovskite solar cells. In this article, we have simulated the various photovoltaic characteristics of [Cs-0.05(MA(0.17)FA(0.83))(0.95)Pb(I0.83Br0.17)(3)] based mixed cation mixed halide perovskite solar cells in n-i-p configurations. We have demonstrated and substantiated the experimentally reported device performances in identical device configurations using the same materials. The effect of variation in different hole transport layers, electron transport layers, doping density, and the thickness of various layers on device performance is thoroughly analyzed through our simulation. Further optimization of device performance is carried out by changing the thickness, doping concentration, and defect density of the active layer, and the PCE of 25.95% is achieved.