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Mixed‐Organic‐Cation Tin Iodide for Lead‐Free Perovskite Solar Cells with an Efficiency of 8.12%
Advanced Science ( IF 14.3 ) Pub Date : 2017-07-14 , DOI: 10.1002/advs.201700204
Ziran Zhao 1 , Feidan Gu 1 , Yunlong Li 1 , Weihai Sun 1, 2 , Senyun Ye 1 , Haixia Rao 1 , Zhiwei Liu 1 , Zuqiang Bian 1 , Chunhui Huang 1
Affiliation  

In this work, a fully tin‐based, mixed‐organic‐cation perovskite absorber (FA)x(MA)1−xSnI3 (FA = NH2CH = NH2+, MA = CH3NH3+) for lead‐free perovskite solar cells (PSCs) with inverted structure is presented. By optimizing the ratio of FA and MA cations, a maximum power conversion efficiency of 8.12% is achieved for the (FA)0.75(MA)0.25SnI3‐based device along with a high open‐circuit voltage of 0.61 V, which originates from improved perovskite film morphology and inhibits recombination process in the device. The cation‐mixing approach proves to be a facile method for the efficiency enhancement of tin‐based PSCs.

中文翻译:

用于无铅钙钛矿太阳能电池的混合有机阳离子碘化锡,效率为8.12%

在这项工作中,使用铅的全锡,混合有机阳离子钙钛矿吸收剂(FA)x(MA)1- x SnI 3(FA = NH 2 CH = NH 2 +,MA = CH 3 NH 3 +)提出了具有倒置结构的无钙钛矿型太阳能电池(PSC)。通过优化FA和MA阳离子的比例,(FA)0.75(MA)0.25 SnI 3的最大功率转换效率达到8.12%基于设备的设备,以及0.61 V的高开路电压,这是由于钙钛矿膜形态的改善,并抑制了设备中的重组过程。阳离子混合法被证明是提高锡基PSC效率的简便方法。
更新日期:2017-07-14
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