Optimization and Performance Analysis of a TiO<sub>2</sub>/i-CH<sub>3</sub>NH<sub>3</sub>SnBr<sub>3</sub>/CsPbI<sub>3</sub>/Al(BSF) Heterojunction Perovskite Solar Cell for Enhanced Efficiency
Mohamed Ghaleb, Amina Arrar, Zaza Touaa
Abstract
High Resolution Image Download MS PowerPoint Slide This paper reports the simulation and optimization of heterojunction perovskite solar cells (PSCs) with a proposed structure of TiO 2 /i-CH 3 NH 3 SnBr 3 /CsPbI 3 /Al(BSF) using SCAPS-1D software. The purpose of this study is to investigate the performance of the PSC with CsPbI 3 perovskite active layers and i-CH 3 NH 3 SnBr 3 as the permeable layer. Therefore, the thicknesses of the layers of the heterojunction perovskite are modified in order to find a better conversion efficiency of the solar cell, where the latter’s performance is improved by optimizing the absorber’s thickness, which is found to be 1 μm, with a permeable layer of 15 μm. The device efficiency of the i-CH 3 NH 3 SnBr 3 /CsPbI 3 heterojunction is improved to 38.98%, and optimized parameters are V oc = 1.21 mV, J sc = 35.63 mA/cm 2, and FF = 89.84%. The acceptor concentration ( N a ), donor concentration ( N d ), defect density, and series and shunt resistances are also investigated.