Optimization of highly efficient inorganic double Cs2AgBiBr6-based perovskite solar cells using SCAPS‑1D Software

Cs2AgBiBr6 possesses a 3-D structure characterized by higher carrier lifetime and a minimal effective mass, with excellent stability and minimal toxicity. Nonetheless, there are notable challenges with Cs2AgBiBr6 that warrant further research. Its wide indirect bandgap limits the efficiency of power conversion in solar devices. this research utilized the One-Dimensional Solar Cell Capacitance Simulator (SCAPS-1D) to examine photovoltaic cells. (DPSCs) based on a Cs2AgBiBr6 absorber. Incorporating tin(IV) oxide (SnO2) as ETL and nickel oxide (NiO) as HTL. We investigated various factors, including absorber layer thickness, defect density, absorber doping density, temperature, and parasitic resistance. After optimizing the device, the double perovskite solar cells achieved impressive electrical characteristics: the power efficiency (PCE) of 23.30%, a short-circuit current density (Jsc) of 33.22 mA/cm², a fill factor (FF) of 86.31%, and an open-circuit voltage (Voc) of 1.419. In summary, we propose potential research directions. for creating efficient, environmentally friendly, and practical Cs2AgBiBr6 perovskite solar cells.