To acknolowdege exceptionally productive flexible perovskite solar cells, low-temperature-processable efficient organic hole transporting materials are very significant for the emerging photovoltaic research. A new organic small molecular hole transporting material (N-(4-(9H-carbazol-9-yl)phenyl)−7-(4-(bis(4-methoxyphenyl)amino)phenyl)-N-(7-(4-(bis(4-methoxyphenyl)amino)phenyl)−9,9-dioctyl-9H-fluoren-2-yl)−9,9-dioctyl-9H-fluoren-2-amine (CzPAF-TPA)) has been rationally designed and synthesized for both highly efficient solution-processed flexible and rigid inverted-type planar heterojunction perovskite solar cells (i-PSCs) and flexible and rigid bulk heterojunction inverted organic solar cells (BHJ IOSCs). The dopant-free CzPAF-TPA-based device displayed significantly improved device performance in solution-processed flexible i-PSCs and flexible BHJ IOSCs with power conversion efficiencies (PCEs) of 12.46% and 7.52%, respectively, with negligible hysteresis, which is superior to that of standard HTM. Furthermore, the high PCE was recorded on rigid ITO substrate in dopant-free i-PSCs (PCE ~15.71%) and BHJ IOSCs (PCE ~8.74%). Notably, the promising technique of flash-photolysis time-resolved microwave conductivity was also well correlated with the obtained results. In addition to their high device performance in flexible as well as rigid i-PSCs and flexible BHJ IOSCs, they also showed long-term stability over 500 h and 30 days with minimal loss of initial performance.

中文翻译：

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使用小分子有机空穴传输材料的高效空气稳定/无滞后柔性倒置型平面钙钛矿和有机太阳能电池

为了承认生产异常有效的柔性钙钛矿太阳能电池，对于新兴的光伏研究，低温可加工的高效有机空穴传输材料非常重要。一种新型的有机小分子空穴传输材料（N-（4-（9 H-咔唑-9-基）苯基）-7-（4-（双（4-（4-甲氧基苯基）氨基）苯基）-N-（7-（ 4-（双（4-甲氧基苯基）氨基）苯基）-9,9-二辛基-9 H-芴-2-基）-9,9-二辛基-9 H-fluoren-2-amine（CzPAF-TPA））已针对高效溶液加工的柔性和刚性倒置型平面异质结钙钛矿太阳能电池（i-PSC）和柔性和刚性大容量异质结倒置有机太阳能电池进行了合理设计和合成单元（BHJ IOSC）。基于无掺杂剂的CzPAF-TPA器件在溶液处理的柔性i-PSC和柔性BHJ IOSC中显示出显着改善的器件性能，功率转换效率（PCE）分别为12.46％和7.52％，滞后值可忽略不计，这是卓越的达到标准HTM的水平。此外，在不含掺杂剂的i-PSC（PCE〜15.71％）和BHJ IOSC（PCE〜8.74％）中，在刚性ITO基板上记录了较高的PCE。值得注意的是，快速光解时间分辨的微波电导率的有前途的技术也与获得的结果很好地相关。