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Indexed by:期刊论文

Date of Publication:2018-09-07

Journal:CHEMICAL COMMUNICATIONS

Included Journals:PubMed、SCIE

Volume:54

Issue:69

Page Number:9571-9574

ISSN No.:1359-7345

Abstract: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.