The performance of perovskite solar cells with inverted polarity ( p-i-n ) is still limited by recombination at their electron extraction interface, which also lowers the power conversion efficiency (PCE) of p-i-n perovskite-silicon tandem solar cells. A ~1 nm thick MgF x interlayer at the perovskite/C 60 interface through thermal evaporation favorably adjusts the surface energy of the perovskite layer, facilitating efficient electron extraction, and displaces C 60 from the perovskite surface to mitigate nonradiative recombination. These effects enable a champion V oc of 1.92 volts, an improved fill factor of 80.7%, and an independently certified stabilized PCE of 29.3% for a ~1 cm 2 monolithic perovskite-silicon tandem solar cell. The tandem retained ~95% of its initial performance following damp-heat testing (85 Celsius at 85% relative humidity) for > 1000 hours.

中文翻译：

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通过 MgF x 的接触位移实现高效稳定的钙钛矿-硅串联太阳能电池

反极性钙钛矿太阳能电池的性能（别针) 仍然受到电子提取界面复合的限制，这也降低了其功率转换效率 (PCE)别针钙钛矿-硅串联太阳能电池。一个 ~1 nm 厚的 MgFX钙钛矿夹层/C60通过热蒸发的界面有利于调节钙钛矿层的表面能，促进有效的电子提取，并取代 C60来自钙钛矿表面以减轻非辐射复合。这些效果使冠军五 oc1.92 伏特，改进的填充因子 80.7%，独立认证的稳定 PCE 为 29.3%，约 1 cm2单片钙钛矿-硅串联太阳能电池。在湿热测试（85 摄氏度，85% 相对湿度）> 1000 小时后，串联保持了约 95% 的初始性能。