Making benzotrithiophene derivatives dopant-free for perovskite solar cells: Step-saving installation of π-spacers by a direct C-H arylation strategy

Yi Kai Peng, Kun Mu Lee, Chang Chieh Ting, Ming Wei Hsu, Ching Yuan Liu

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Previously, benzotrithiophene (BTT)-based hole-transporting materials (HTMs) had to be doped with three chemical agents for high-efficiency perovskite solar cells (PSC). This work describes significant progress by which the first dopant-free BTT core-based HTM (YKP03) with EDOT spacers was readily accessed by step-saving direct C-H arylation. PSCs with dopant-free YKP03 showed promising efficiencies of up to 16.15% with potential long-term storage stability.

Original languageEnglish
Pages (from-to)24765-24770
Number of pages6
JournalJournal of Materials Chemistry A
Volume7
Issue number43
DOIs
StatePublished - 2019

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