Solar power conversion: CuI hole transport layer and BaNCl absorber enable advanced solar cell technology boosting efficiency over 30.

Researchers are becoming more interested in novel barium-nitride-chloride (BaNCl) hybrid perovskite solar cells (HPSCs) due to their remarkable semiconductor properties. An electron transport layer (ETL) built from TiO and a hole transport layer (HTL) made of CuI have been studied in BaNCl-based single junction photovoltaic cells in a variety of variations. Through extensive numerical analysis using SCAPS-1D simulation software, we investigated elements such as layer thickness, defect density, doping concentration, interface defect density, carrier concentration, generation, recombination, temperature, series and shunt resistance, open circuit voltage ( ), short circuit current ( ), fill factor (FF), and power conversion efficiency (PCE). The study found that the HTL CuI design reached the highest PCE at 30.47% with a of 1.0649 V, a of 38.2609 mA cm, and an FF of 74.78%. These findings offer useful data and a practical plan for producing inexpensive, BaNCl-based thin-film solar cells.