Direct C−H Arylation Meets Perovskite Solar Cells: Tin‐Free Synthesis Shortcut to High‐Performance Hole‐Transporting Materials |
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| Authors: | Prof?Dr Kun‐Mu Lee Chia‐Hsin Lai Prof?Dr Ching‐Yuan Liu |
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| Affiliation: | 1. Department of Chemical & Materials Engineering, Chang Gung University/Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan) (R.O.CThese authors contributed equally to this work?;2. Department of Chemical and Materials Engineering, National Central University, Taoyuan, Taiwan) (R.O.C |
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| 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′‐tetrakisN,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. |
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| Keywords: | arylation C− H activation energy conversion hole-transporting materials solar cells |
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