Passivating Defects of Perovskite Solar Cells with Functional Donor‐Acceptor–Donor Type Hole Transporting Materials
作者:Sarune Daskeviciute‐Geguziene、Yi Zhang、Kasparas Rakstys、Chuanxiao Xiao、Jianxing Xia、Zhiheng Qiu、Maryte Daskeviciene、Tomas Paskevicius、Vygintas Jankauskas、Abdullah M. Asiri、Vytautas Getautis、Mohammad Khaja Nazeeruddin
DOI:10.1002/adfm.202208317
日期:2023.1
distinguished by different acceptors, as holetransporting materials (HTMs) for perovskite solar cells is presented. The incorporation of the malononitrile acceptor units is found to be beneficial for not only carrier transportation but also defects passivation via Pb–N interactions. The highest power conversion efficiency of over 22% is achieved on cells based on V1359, which is higher than that of spiro-OMeTAD
在这项研究中,提出了一系列基于芴和二苯基乙烯基烯胺单元的供体-受体-供体 (DAD) 型小分子,它们以不同的受体区分,作为钙钛矿太阳能电池的空穴传输材料 (HTM)。发现丙二腈受体单元的结合不仅有利于载体运输,而且还有利于通过 Pb-N 相互作用进行的缺陷钝化。基于V1359的电池实现了超过22%的最高功率转换效率,在相同条件下高于spiro-OMeTAD。该研究表明,通过简化的合成路线制备的 HTM 不仅是 spiro-OMeTAD 的低成本替代品,而且在效率和稳定性方面也优于通过昂贵的交叉偶联方法获得的最先进材料。