Hydrophobic organic fluoropolymers (HOFPs) with excellent hydrophobic, heat-resistant, and sunlight-transparent properties were synthesized by emulsion polymerization. The HOFP layer was inserted between a (FAMA)Pb(IBr)3 active layer and a hole transport layer in perovskite solar cells (PSCs). The performance of the resulting PSC devices depends highly on the thickness of the HOFP layer. Under optimized HOFP thickness, a moderate steady power conversion efficiency (PCE) of 16.9% was achieved. Remarkably, the optimized PSCs without any encapsulation exhibit outstanding shelf stability under ambient conditions, and the PCE could maintain 80% of its initial value after 2400 h (100 days), which was among the ever reported best stability whereas, the reference device without HOFP shows rapid severe degradation after only a few days. The significantly improved stability of PSCs was mainly ascribed to the impermeable barrier properties of the HOFP layer, which protect the perovskite active layer against moisture and oxygen from the ambient atmosphere.Hydrophobic organic fluoropolymers (HOFPs) with excellent hydrophobic, heat-resistant, and sunlight-transparent properties were synthesized by emulsion polymerization. The HOFP layer was inserted between a (FAMA)Pb(IBr)3 active layer and a hole transport layer in perovskite solar cells (PSCs). The performance of the resulting PSC devices depends highly on the thickness of the HOFP layer. Under optimized HOFP thickness, a moderate steady power conversion efficiency (PCE) of 16.9% was achieved. Remarkably, the optimized PSCs without any encapsulation exhibit outstanding shelf stability under ambient conditions, and the PCE could maintain 80% of its initial value after 2400 h (100 days), which was among the ever reported best stability whereas, the reference device without HOFP shows rapid severe degradation after only a few days. The significantly improved stability of PSCs was mainly ascribed to the impermeable barrier properties of the HOFP layer, which protect the perovskite active layer against moisture...

中文翻译：

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使用疏水性有机含氟聚合物增强钙钛矿太阳能电池的稳定性

通过乳液聚合合成了具有优异疏水性、耐热性和阳光透明性的疏水性有机含氟聚合物 (HOFPs)。HOFP 层插入钙钛矿太阳能电池 (PSC) 中的 (FAMA)Pb(IBr)3 活性层和空穴传输层之间。所得 PSC 器件的性能在很大程度上取决于 HOFP 层的厚度。在优化的 HOFP 厚度下，实现了 16.9% 的中等稳定功率转换效率 (PCE)。值得注意的是，没有任何封装的优化 PSC 在环境条件下表现出出色的货架稳定性，并且 PCE 可以在 2400 小时（100 天）后保持其初始值的 80%，这是有史以来报告的最佳稳定性之一，而没有 HOFP 的参考设备仅几天后就显示出快速的严重降解。PSCs 稳定性的显着提高主要归功于 HOFP 层的不渗透阻隔性能，它保护钙钛矿活性层免受环境大气中的水分和氧气的影响。 疏水性有机氟聚合物 (HOFPs) 具有优异的疏水性、耐热性和阳光-透明性能是通过乳液聚合合成的。HOFP 层插入钙钛矿太阳能电池 (PSC) 中的 (FAMA)Pb(IBr)3 活性层和空穴传输层之间。所得 PSC 器件的性能在很大程度上取决于 HOFP 层的厚度。在优化的 HOFP 厚度下，实现了 16.9% 的中等稳定功率转换效率 (PCE)。值得注意的是，没有任何封装的优化 PSC 在环境条件下表现出出色的货架稳定性，并且 PCE 可以在 2400 小时（100 天）后保持其初始值的 80%，这是有史以来报告的最佳稳定性之一，而没有 HOFP 的参考设备仅在几天后就表现出快速的严重退化。PSCs 稳定性的显着提高主要归因于 HOFP 层的不渗透阻隔性能，它保护钙钛矿活性层免受水分...