Thickness Dependence of Window Layer on CH₃NH₃PbI_3-XCl_X Perovskite Solar Cell

Abstract

CH 3 NH 3 PbI 3-x Cl x has been studied experimentally and has shown promising results for photovoltaic application. To enhance its performance, this study investigated the effect of varying thickness of FTO, TiO 2 , and CH 3 NH 3 PbI 3-x Cl x for a perovskite solar cell with the structure glass/FTO/TiO 2 /CH 3 NH 3 PbI 3-x Cl x /Spiro-OMeTAD/Ag studied using SCAPS-1D simulator software. The output parameters obtained from the literature for the device were 26.11 mA/cm 2 , 1.25 V, 69.89%, and 22.72% for J sc , V oc , FF, and η, respectively. The optimized solar cell had a thickness of 100 nm, 50 nm, and 300 nm for FTO, TiO 2 , and CH 3 NH 3 PbI 3-x Cl x layers, respectively, and the device output were 25.79 mA/cm 2 , 1.45 V, 78.87%, and 29.56% for J sc , V oc , FF, and η, respectively, showing a remarkable increase in FF by 8.98% and 6.84% for solar cell efficiency. These results show the potential of fabricating an improved CH 3 NH 3 PbI 3-x Cl x perovskite solar cell.