A new strategy for constructing a dispiro-based dopant-free hole-transporting material: spatial configuration of spiro-bifluorene changes from a perpendicular to parallel arrangement
Zhongquan Wan, Jinyu Yang, Jianxing Xia, Hongyu Shu, Xiaojun Yao, Junsheng Luo, Chunyang Jia
Abstract
A dispiro-based HTM with a parallel arrangement of two fluorenes was designed by replacing the central carbon atom of Spiro-OMeTAD with cyclohexane. The PCE of a PSC based on dopant-free WH-1 is 19.57%, rivaling that of doped Spiro-OMeTAD (20.29%).
Topics & Concepts
DopantCyclohexanePerpendicularAtom (system on chip)DopingCarbon fibersCarbon atomMaterials scienceChemistryCrystallographyOptoelectronicsOrganic chemistryGeometryComputer scienceComposite materialMathematicsParallel computingAlkylComposite numberPerovskite Materials and ApplicationsOrganic Light-Emitting Diodes ResearchOrganic Electronics and Photovoltaics