A comparative theoretical study on the performance of perovskite solar cells (PSCs) with methyl ammonium lead iodide (MAPbI₃) and methyl ammonium germanium iodide (MAGeI₃) as absorber layers is reported by modeling the solar cells for a number of electron transport materials (ETMs), hole transport materials, and back‐contact metals using solar cell capacitance simulator 1D tool. For MAPbI₃ as the absorber layer, the best photovoltaic performance is observed for the configuration glass/fluorine‐doped tin oxide (FTO)/SnO₂/MAPbI₃/NiO/Au with a power conversion efficiency (PCE) of 20.58% and a fill factor (FF) of 68.34% and for MAGeI₃, the configuration glass/FTO/SnO₂/MAGeI₃/CuO/Pd exhibits the best performance with a PCE of 13.12% and a FF of 68.29%. This study indicates that the low‐cost metal oxide SnO₂ is a better substitute for the commonly used TiO₂ as ETM, and the metal oxides like NiO and CuO provide a higher PCE for device configurations with MAPbI₃ and MAGeI₃, respectively, as the absorber layer. The low‐cost back‐contact metal Pd provides a better performance for MAGeI₃‐based PSCs. This study also indicates that the nontoxic MAGeI₃‐based PSCs can be used for commercial applications as they are more thermally stable than the MAPbI₃‐based PSCs and provide an equally good quantum efficiency curve as that of MAPbI₃‐based PSCs.

中文翻译：

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不同铅基和无铅钙钛矿太阳能电池性能的比较研究

通过对许多电子传输材料的太阳能电池进行建模，报道了对以甲基铵碘化铅（MAPbI ₃）和甲基碘化锗铵（MAGeI ₃）作为吸收层的钙钛矿型太阳能电池（PSC）性能的比较理论研究。ETM），空穴传输材料和背面接触金属，使用太阳能电池电容模拟器1D工具。对于MAPbI ₃作为吸收层，对于配置玻璃/掺氟氧化锡（FTO）/ SnO ₂ / MAPbI ₃ / NiO / Au的配置，观察到最佳的光伏性能，功率转换效率（PCE）为20.58％，填充因子（FF）为68.34％，对于MAGeI ₃，配置玻璃/ FTO / SnO ₂/ MAGeI ₃ / CuO / Pd表现出最佳性能，PCE为13.12％，FF为68.29％。这项研究表明，低成本的金属氧化物的SnO ₂是用于常用的TiO一个更好的替代品₂为ETM和类似的NiO和CuO的金属氧化物提供与MAPbI设备配置更高的PCE ₃和MAGeI ₃分别作为吸收层。低成本的背接触金属Pd为基于MAGeI ₃的PSC提供了更好的性能。这项研究还表明，基于无毒MAGeI ₃的PSC比MAPbI ₃具有更高的热稳定性，因此可用于商业应用的PSC，并提供与基于MAPbI ₃的PSC相同的量子效率曲线。