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Reduced Intramolecular Twisting Improves the Performance of 3D Molecular Acceptors in Non‐Fullerene Organic Solar Cells
Author(s) -
Lin Haoran,
Chen Shangshang,
Hu Huawei,
Zhang Lu,
Ma Tingxuan,
Lai Joshua Yuk Lin,
Li Zhengke,
Qin Anjun,
Huang Xuhui,
Tang Benzhong,
Yan He
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201600997
Subject(s) - materials science , fullerene , organic solar cell , intramolecular force , chemical engineering , photochemistry , nanotechnology , optoelectronics , organic chemistry , composite material , polymer , chemistry , engineering
A small‐molecular acceptor , tetraphenylpyrazine‐perylenediimide tetramer (TPPz‐PDI 4 ), which has a reduced extent of intramolecular twisting compared to two other small‐molecular acceptors is designed. Benefiting from the lowest extent of intramolecular twisting, TPPz‐PDI 4 exhibits the highest aggregation tendency and electron mobility, and therefore achieves a highest power conversion efficiency of 7.1%.