The photovoltaic devices based on organic-inorganic halide perovskite materials have witnessed a rapid increase in performance and are marching towards commercialization. Recently, lead-free perovskites have drawn huge attention as one of the major research topics over toxic lead-based materials. Here, we report the optimized device performance of methylammonium tin iodide (MASnI₃) based perovskite solar cell by using numerical simulation. The influence of different key parameters, such as different hole transport layers (HTLs), doping density, thickness of different layers including defect density on the device performances is thoroughly analysed through numerical simulation. The optimized device architecture with copper (I) oxide (Cu₂O) as the hole transport layer and TiO₂ as electron transport layer shows the highest power conversion efficiency of 27.43%, short circuit current density of 25.97 mA/cm², open-circuit voltage of 1.203 V, and fill factor of 87.79%. This indicates that by optimizing the device parameters, it is possible to achieve high performance lead-free perovskite solar cells experimentally in future research.

基于有机-无机卤化物钙钛矿材料的光伏器件已经见证了性能的快速提高，并正在走向商业化。近来，无铅钙钛矿作为有毒铅基材料的主要研究主题之一受到了广泛的关注。在这里，我们通过数值模拟报告了基于甲基铵碘化锡（MASnI ₃）的钙钛矿型太阳能电池的优化器件性能。通过数值模拟，深入分析了不同的关键参数，例如不同的空穴传输层（HTL），掺杂密度，包括缺陷密度在内的不同层的厚度对器件性能的影响。使用氧化铜（I）（Cu ₂ O）作为空穴传输层和TiO的优化器件架构作为电子传输层的图₂示出了最高的功率转换效率，为27.43％，短路电流密度为25.97 mA / cm ²，开路电压为1.203 V，填充系数为87.79％。这表明通过优化器件参数，有可能在未来的研究中通过实验获得高性能的无铅钙钛矿太阳能电池。