Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2018-09-07

Journal: CHEMICAL COMMUNICATIONS

Included Journals: SCIE、PubMed

Volume: 54

Issue: 69

Page Number: 9571-9574

ISSN: 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.