Passivating Defects of Perovskite Solar Cells with Functional Donor-Acceptor–Donor Type Hole Transporting Materials

Sarune Daskeviciute-Geguziene; Yi Zhang; Kasparas RakstysChuanxiao XiaoJianxing XiaZhiheng QiuMaryte DaskevicieneTomas PaskeviciusVygintas JankauskasAbdullah M. AsiriVytautas GetautisMohammad Khaja Nazeeruddin

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Passivating Defects of Perovskite Solar Cells with Functional Donor-Acceptor–Donor Type Hole Transporting Materials

机译：Passivating Defects of Perovskite Solar Cells with Functional Donor-Acceptor–Donor Type Hole Transporting Materials

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In this study, a series of donor–acceptor–donor (D-A-D) type small molecules based on the fluorene and diphenylethenyl enamine units, which are 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 under identical conditions. This st shows that HTMs prepared via simplified synthetic routes are not only a low-cost alternative to spiro-OMeTAD but also outperform in efficiency and stability state-of-art materials obtained via expensive cross-coupling methods.

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《Advanced functional materials》 |2023年第1期|2208317.1-2208317.8|共8页
作者
Sarune Daskeviciute-Geguziene; Yi Zhang; Kasparas RakstysChuanxiao XiaoJianxing XiaZhiheng QiuMaryte DaskevicieneTomas PaskeviciusVygintas JankauskasAbdullah M. AsiriVytautas GetautisMohammad Khaja Nazeeruddin;
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Department of Organic Chemistry Kaunas University of Technology Radvilenu pl. 19, 50254 Kaunas, Lithuania;

Group for Molecular Engineering of Functional Material Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne CH-1951 Sion, Switzerland;

Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo, Zhejiang 315201, China,Ningbo New Materials Testing and Evaluation Center CO., Ltd Ningbo, Zhejiang 315201, ChinaDepartment of Organic Chemistry Center for Physical Sciences and Technology Akademijos g. 7, 08412 Vilnius, LithuaniaInstitute of Chemical Physics Vilnius University Sauletekio al. 3, 10257 Vilnius, LithuaniaCenter of Excellence for Advanced Materials Research (CEAMR) King Abdulaziz University P.O. Box 80203, Jeddah 21589, Saudi Arabia;

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defects passivation; donor-acceptor-donor; fluorene; malononitrile; perovskite solar cells;

Passivating Defects of Perovskite Solar Cells with Functional Donor-Acceptor–Donor Type Hole Transporting Materials

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