In this study, the fabrication of highly efficient and durable flexible inverted perovskite solar cells (PSCs) is reported. Presynthesized, solution‐derived NiO_x and ZnO nanoparticles films are employed at room temperature as a hole transport layer (HTL) and electron transport layer (ETL), respectively. The triple cation perovskite films are produced in a single step and for the sake of comparison, ultrasmooth and pinhole‐free absorbing layers are also fabricated using MAPbI₃ perovskite. The triple cation perovskite cells exhibit champion power conversion efficiencies (PCEs) of 18.6% with high stabilized power conversion efficiency of 17.7% on rigid glass/indium tin oxide (ITO) substrates (comparing with 16.6% PCE with 16.1% stabilized output efficiency for the flexible polyethylene naphthalate (PEN)/thin film barrier/ITO substrates). More interestingly, the durability of flexible PSC under simulation of operative condition is proved. Over 85% of the maximum stabilized output efficiency is retained after 1000 h aging employing a thin MAPbI₃ perovskite (over 90% after 500 h with a thick triple cation perovskite). This result is comparable to a similar state of the art rigid PSC and represents a breakthrough in the stability of flexible PSC using ETLs and HTLs compatible with roll to roll production speed, thanks to their room temperature processing.

中文翻译：

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具有金属氧化物纳米粒子电荷提取层的高效，稳定的柔性钙钛矿太阳能电池

在这项研究中，报道了高效耐用的柔性倒钙钛矿太阳能电池（PSC）的制造。预合成的溶液衍生的NiO _x和ZnO纳米颗粒薄膜在室温下分别用作空穴传输层（HTL）和电子传输层（ETL）。一步法生产三阳离子钙钛矿薄膜，为便于比较，还使用MAPbI ₃制备了超光滑和无针孔的吸收层钙钛矿。在硬质玻璃/铟锡氧化物（ITO）基板上，三阳离子钙钛矿电池的冠军功率转换效率（PCE）为18.6％，稳定的功率转换效率为17.7％（相比之下，PCE为16.6％的稳定输出效率为16.1％）。柔性聚萘二甲酸乙二醇酯（PEN）/薄膜阻隔层/ ITO基材）。更有趣的是，在操作条件模拟下，证明了柔性PSC的耐用性。使用薄MAPbI ₃老化1000小时后，保留了超过85％的最大稳定输出效率。钙钛矿（500 h后超过90％的溶液带有浓厚的三阳离子钙钛矿）。该结果可与同类最新的刚性PSC相媲美，并且由于采用了室温加工技术，因此使用与卷对卷生产速度兼容的ETL和HTL可以实现柔性PSC稳定性方面的突破。