Abstract Organic n-type semiconductors represent a promising alternative to metal oxide electron transport layer (ETL) materials for perovskite solar cells. In this work, we applied perylenetetrecarboxylic dianhydride (PTCDA) as ETL for planar perovskite solar cells assembled in n-i-p cell architecture ITO/PTCDA/MAPbI3/PTA/MoO3/Ag. Using an optimal thickness of PTCDA layer (3 nm), the devices delivered a promising power conversion efficiency of 14.3 % efficiency in devices. Higher efficiency of 15.2 % was obtained using a binary SnO2/PTCDA ETL layer, while the reference cells assembled with individual SnO2 ETL showed inferior performance. Our findings suggest that PTCDA can be considered as an alternative low-cost electron transport layer suitable for low-temperature and scalable fabrication of perovskite solar cells.

中文翻译：

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苝四羧酸二酐作为nip钙钛矿太阳能电池的有机电子传输层

摘要 有机 n 型半导体是钙钛矿太阳能电池金属氧化物电子传输层 (ETL) 材料的有前途的替代品。在这项工作中，我们将苝四甲酸二酐 (PTCDA) 作为 ETL，用于组装在 nip 电池架构 ITO/PTCDA/MAPbI3/PTA/MoO3/Ag 中的平面钙钛矿太阳能电池。使用最佳厚度的 PTCDA 层 (3 nm)，这些器件在器件中实现了 14.3% 的有希望的功率转换效率。使用二元 SnO2/PTCDA ETL 层获得了 15.2% 的更高效率，而与单个 SnO2 ETL 组装的参考电池表现出较差的性能。我们的研究结果表明，PTCDA 可以被视为一种替代的低成本电子传输层，适用于钙钛矿太阳能电池的低温和可扩展制造。