A star-shaped cyclopentadithiophene-based dopant-free hole-transport material for high-performance perovskite solar cells

A new cyclopentadithiophene (CPDT)-based organic small molecule serves as an efficient dopant-free hole transport material (HTM) for perovskite solar cells (PSCs). Upon incorporation of two carbazole groups, the resulting CPDT-based HTM (C-CPDT) shows an impressive power conversion efficiency (PCE)...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2021-06, Vol.57 (52), p.6444-6447
Hauptverfasser: Lee, Kun-Mu, Yang, Jui-Yu, Lai, Ping-Sheng, Luo, Ke-Jyun, Yang, Ting-Yu, Liau, Kang-Ling, Abate, Seid Yimer, Lin, Yan-Duo
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Sprache:eng
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Zusammenfassung:A new cyclopentadithiophene (CPDT)-based organic small molecule serves as an efficient dopant-free hole transport material (HTM) for perovskite solar cells (PSCs). Upon incorporation of two carbazole groups, the resulting CPDT-based HTM (C-CPDT) shows an impressive power conversion efficiency (PCE) of 19.68% with better stability compared with those of spiro-OMeTAD. Devices based on star-shaped cyclopentadithiophene, C-CPDT , as a dopant-free HTM exhibit a promising efficiency of 19.68% and excellent long-term stability.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc02396a