用于高性价比钙钛矿太阳能电池的三芳基胺功能化咪唑封端联噻吩空穴传输材料
Triarylamine-Functionalized Imidazolyl-Capped Bithiophene Hole Transporting Material for Cost-Effective Perovskite Solar Cells.
作者信息
Joseph Vellaichamy, Xia Jianxing, Sutanto Albertus Adrian, Jankauskas Vygintas, Momblona Cristina, Ding Bin, Rakstys Kasparas, Balasaravanan Rajendiran, Pan Chun-Huang, Ni Jen-Shyang, Yau Shueh-Lin, Sohail Muhammad, Chen Ming-Chou, Dyson Paul J, Nazeeruddin Mohammad Khaja
机构信息
Department of Chemistry and Research Center of New Generation Light-Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan.
Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Sion CH-1951, Switzerland.
出版信息
ACS Appl Mater Interfaces. 2022 May 18;14(19):22053-22060. doi: 10.1021/acsami.2c00841. Epub 2022 May 5.
Triarylamine end-capped-functionalized arylene-imidazole derivatives were synthesized from readily accessible, inexpensive precursors and employed as hole transporting materials (HTMs) in perovskite solar cells (PSCs). All the HTMs displayed high thermal decomposition temperatures (>410 °C), which is beneficial for realizing stable PSC devices. In addition, the new HTMs show appropriate energy level alignment with the perovskite layer, ensuring efficient hole transfer from perovskites to HTMs. Interestingly, PSCs fabricated with the triarylamine-functionalized imidazolyl-capped bithiophene molecule (DImBT-4D) as the HTM exhibited the best power conversion efficiency of 20.11%, comparable to that of the benchmark HTM spiro-OMeTAD, prompting it be a prospective candidate for large-scale PSC applications.
三芳基胺封端功能化的亚芳基咪唑衍生物由易于获得的廉价前体合成，并用作钙钛矿太阳能电池（PSC）中的空穴传输材料（HTM）。所有的HTM都表现出较高的热分解温度（>410°C），这有利于实现稳定的PSC器件。此外，新型HTM与钙钛矿层显示出合适的能级排列，确保了空穴从钙钛矿到HTM的有效转移。有趣的是，以三芳基胺功能化的咪唑基封端联噻吩分子（DImBT-4D）作为HTM制备的PSC表现出20.11%的最佳功率转换效率，与基准HTM螺环-OMeTAD相当，这促使它成为大规模PSC应用的一个有前景的候选材料。
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