用于钙钛矿太阳能电池的SmMoSe2电子传输层的光伏性能增强

Electron transport layers (ETLs) are crucial components in perovskite solar cells (PSCs), facilitating efficient electron collection and reducing recombination losses. While transition metal dichalcogenides have shown promise as ETLs, the potential of samarium (Sm)-encapsulated (5% and 10%) molybdenum diselenide (MoSe 2 ) remains unexplored. This study investigates the impact of hydrothermal synthesis incorporating SmMoSe 2 on the physicochemical properties and photovoltaic performance of PSCs. J-V performance demonstrates a significant enhancement in solar cell performance with samarium encapsulation. The MoSe 2 exhibited a Jsc of 11.27 mA/cm 2 , Voc of 1.02 V, fill factor of 70%, and power conversion efficiency of 7.97%. In comparison, the SmMoSe 2 5% sample showed improved performance with a Jsc of 13.02 mA/cm 2 , Voc of 1.02 V, fill factor of 78%, and efficiency of 9.46%. The SmMoSe 2 10% sample demonstrated the best performance, with a Jsc of 13.93 mA/cm 2 , Voc of 1.03 V, fill factor of 82%, and a notable power conversion efficiency increase to 10.24%. The enhanced performance of SmMoSe 2 10% PSCs can be attributed to accelerated charge transfer at the ETL, improved crystalline morphology and size, reduced band gap, and increased surface area. These findings suggest that SmMoSe 2 electron transport layers can substantially enhance the performance of perovskite solar cells, with higher doping levels leading to greater improvements in efficiency.