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

Kun-Mu Lee; Jui-Yu Yang; Ping-Sheng Lai; Ke-Jyun Luo; Ting-Yu Yang; Kang-Ling Liau; Seid Yimer Abate; Yan-Duo Lin

doi:10.1039/d1cc02396a

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

Chem Commun (Camb). 2021 Jun 29;57(52):6444-6447. doi: 10.1039/d1cc02396a.

Authors

Kun-Mu Lee¹, Jui-Yu Yang², Ping-Sheng Lai³, Ke-Jyun Luo², Ting-Yu Yang², Kang-Ling Liau⁴, Seid Yimer Abate⁵, Yan-Duo Lin²

Affiliations

¹ Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan and Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou Taoyuan 33305, Taiwan and Center for Green Technology, Chang Gung University, Taoyuan 33302, Taiwan.
² Department of Chemistry, Soochow University, Taipei 11102, Taiwan. ydlin@scu.edu.tw.
³ Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan.
⁴ Department of Chemistry, National Central University, Taoyuan 32001, Taiwan.
⁵ Institute of Chemistry, Academia Sinica, Taipei 115024, Taiwan.

PMID: 34096942
DOI: 10.1039/d1cc02396a

Abstract

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.