Investigating a Pb-free n-i-p perovskite solar cell with BFCO absorber using SCAPS-1D
Nassim Ahmed Mahammedi, Afif Benameur, Hamza Gueffaf, Boualem Merabet, Osman Murat Özkendir, Shin Sato
Abstract
Perovskite solar cells (PSCs) have emerged as promising photovoltaic (PV) devices and have received significant attention in recent years. However, the commercialization of Pb-based PSCs has been hindered by several factors, including Pb toxicity, despite achieving record levels of power conversion efficiency (PCE) over the past decade. Bi-based all-inorganic PSCs have the potential to be a viable alternative with promising efficiencies. In this study, we modeled a Bi2FeCrO6-based (BFCO) PSC using the Solar Cell Capacitance Simulator (SCAPS-1D), analyzing the effects of thicknesses, doping concentrations, and some external parameters. For an optimized absorber thickness of 850 nm, a maximum PCE of approximately 9.1% at ambient temperature was predicted (with an open-circuit voltage, short-circuit current density, and fill factor of 2.1 V, 6.73 mA/cm2, and 66.3%, respectively). We found that decreasing defect densities Nt of the BFCO layer below 1014 cm-3 could increase PCE to exceed 9.1%. Temperature has a negative effect on the solar cell, the optimum condition is found at 300 K. These findings are promising for further improvement of Pb-free PSCs and improving their design and integration.