Design and synthesis of dopant-free organic hole-transport materials for perovskite solar cells

Linqin Wang, Jinbao Zhang, Peng Liu, Bo Xu, Biaobiao Zhang, Hong Chen, A. Ken Inge, Yuanyuan Li, Haoxin Wang, Yi Bing Cheng, Lars Kloo, Licheng Sun

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36 Citations (Scopus)


Two novel dopant-free hole-transport materials (HTMs) with spiro[dibenzo[c,h]xanthene-7,9′-fluorene] (SDBXF) skeletons were prepared via facile synthesis routes. A power conversion efficiency of 15.9% in perovskite solar cells is attained by using one HTM without dopants, which is much higher than undoped Spiro-OMeTAD-based devices (10.8%). The crystal structures of both new HTMs were systematically investigated to reveal the reasons behind such differences in performance and to indicate the design principles of more advanced HTMs.

Original languageEnglish
Pages (from-to)9571-9574
Number of pages4
JournalChemical Communications
Issue number69
Publication statusPublished - 7 Sep 2018

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