Fabrication of lead halide perovskite solar cells with improved photovoltaic performance using MoSe₂ additive strategies

Herein, we reported the fabrication of methyl ammonium lead iodide (MAPbI₃) based perovskite solar cells (PSCs). Molybdenum diselenide (MoSe₂) was hydrothermally prepared and used as an additive to control the rapid crystallization of MAPbI₃. Different weight percentage of (0.1, 0.2, 0.3, 0.4, 0.5 and 0.7 %) of the MoSe₂ additive was explored to control the crystallization process and improve the surface morphological characteristics of the MAPbI₃. The obtained results showed that 0.5 % MoSe₂ additive modified MAPbI₃ based PSCs device demonstrated excellent efficiency of 15.1 % with open circuit voltage (Voc) = 0.99 V, photocurrent-density (Jsc) = 21.26 mA/cm² and fill factor (FF) = 0.72. The fabricated device with 0.5 % MoSe₂ additive retained more than 85 % efficiency whereas pristine MAPbI₃ based device retained 49.56 % efficiency after 1200 h. This suggested that 0.5 % MoSe₂ additive modified MAPbI₃ based PSCs device has excellent stability compared to the pristine MAPbI₃ based PSCs device.