Here we reported the doping of graphdiyne in P3CT-K in MAPbI₃ perovskite solar cells as hole-transport materials. The doping could improve the surface wettability of P3CT-K, and the resulting perovskite morphology was improved with homogeneous coverage and reduced grain boundaries. Simultaneously, it increased the hole-extraction mobility and reduced the recombination as well as improved the performance of devices. Therefore, a high efficiency of 19.5% was achieved based on improved short-circuit current and fill factor. In addition, hysteresis of the J–V curve was also obviously reduced. This work paves the way for the development of highly efficient perovskite solar cells.

中文翻译：

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Graphdiyne掺杂的P3CT-K作为MAPbI ₃钙钛矿太阳能电池的高效空穴传输层

在这里，我们报道了在MAPbI ₃钙钛矿型太阳能电池中P3CT-K中的石墨烯炔掺杂作为空穴传输材料。掺杂可以改善P3CT-K的表面润湿性，并且得到的钙钛矿形态随着均匀的覆盖率和减小的晶界而得到改善。同时，它增加了空穴提取的迁移率，减少了重组，并提高了器件的性能。因此，基于改善的短路电流和填充系数，可实现19.5％的高效率。此外，J – V曲线的磁滞也明显降低。这项工作为高效钙钛矿太阳能电池的开发铺平了道路。