Direct C-H Arylation Meets Perovskite Solar Cells: Tin-Free Synthesis Shortcut to High-Performance Hole-Transporting Materials

Yu-Chieh Chang; Kun-Mu Lee; Chia-Hsin Lai; Ching-Yuan Liu

doi:10.1002/asia.201800454

Direct C-H Arylation Meets Perovskite Solar Cells: Tin-Free Synthesis Shortcut to High-Performance Hole-Transporting Materials

Chem Asian J. 2018 Jun 4;13(11):1510-1515. doi: 10.1002/asia.201800454. Epub 2018 May 15.

Authors

Yu-Chieh Chang¹, Kun-Mu Lee², Chia-Hsin Lai¹, Ching-Yuan Liu¹

Affiliations

¹ Department of Chemical and Materials Engineering, National Central University, Jhongli District, Taoyuan, 320, Taiwan) (R.O.C.
² Department of Chemical & Materials Engineering, Chang Gung University/Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan, 333, Taiwan) (R.O.C.

PMID: 29603676
DOI: 10.1002/asia.201800454

Abstract

In contrast to the traditional multistep synthesis, we demonstrate herein a two-step synthesis shortcut to triphenylamine-based hole-transporting materials (HTMs) through sequential direct C-H arylations. These hole-transporting molecules are fabricated in perovskite-based solar cells (PSCs) that exhibit promising efficiencies up to 17.69 %, which is comparable to PSCs utilizing commercially available 2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (spiro-OMeTAD) as the HTM. This is the first report describing the use of step-saving C-H activations/arylations in the facile synthesis of small-molecule HTMs for perovskite solar cells.

Keywords: C−H activation; arylation; energy conversion; hole-transporting materials; solar cells.