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
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.
Topics & Concepts
DopantPerovskite (structure)Materials scienceStar (game theory)OptoelectronicsChemical engineeringDopingPhysicsAstrophysicsEngineeringPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics