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Updated: Nov 2, 2025

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
A star-shaped cyclopentadithiophene-based dopant-free hole-transport material for high-performance perovskite solar
Kun-Mu Lee1, Jui-Yu Yang2, Ping-Sheng Lai3
1Department 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.
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.

