Chlorine‐doped perovskite materials for highly efficient perovskite solar cell design offering an efficiency of nearly 29

The new form of renewable energy attracts enormous attention from researchers for its immense importance and impact on our daily life. A fossil energy is a non‐renewable source that will end shortly because of its immense use in houses and industries. Among the renewable sources, solar cells based on perovskite (PVK) materials exponentially increase their efficiency from 3.8% to 25.8% rapidly in a diminutive period of time. In the present study, doped and undoped PVK layers (MAPbI3, MAPb[I1‐xClx]3) are considered and optimized for solar cell application by using the SCAPS‐1D device simulator. A detailed investigation is done in terms of PVK absorber layer (PAL) thickness variation with different electron and hole transport layers, temperature, and bulk defect density to optimize the device performance. The MAPb(I1‐xClx)3‐based device delivered the highest conversion efficiency of ~29% with JSC of 25.59 mA/cm2, VOC of 1.348 Volt, and an FF of about 83.68%. Results reported in this work may pave the way for the development of advanced high‐efficiency PVK solar cells. The efficiency enhancement using the doped chloride perovskite solar cell is simulated and optimized. The optimization in the absorber and carrier transport layer thickness, temperature, and defect density optimization shows an unprecedented efficiency of nearly 29%. Furthermore, the work can be used for further solar cell optimization and can replace the undoped and traditionally utilized perovskite material.