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Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open‐Circuit Voltage
Author(s) -
Yao Huifeng,
Ye Long,
Hou Junxian,
Jang Bomee,
Han Guangchao,
Cui Yong,
Su Gregory M.,
Wang Cheng,
Gao Bowei,
Yu Runnan,
Zhang Hao,
Yi Yuanping,
Woo Han Young,
Ade Harald,
Hou Jianhui
Publication year - 2017
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.201700254
Subject(s) - acceptor , materials science , tandem , intermolecular force , organic solar cell , open circuit voltage , energy conversion efficiency , electron acceptor , photovoltaic system , homo/lumo , nanotechnology , photochemistry , molecule , voltage , optoelectronics , electrical engineering , organic chemistry , chemistry , physics , polymer , condensed matter physics , quantum mechanics , engineering , composite material
A new acceptor–donor–acceptor‐structured nonfullerene acceptor ITCC (3,9‐bis(4‐(1,1‐dicyanomethylene)‐3‐methylene‐2‐oxo‐cyclopenta[ b ]thiophen)‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐ d ′:2,3‐ d′ ]‐s‐indaceno[1,2‐ b :5,6‐ b′ ]‐dithiophene) is designed and synthesized via simple end‐group modification. ITCC shows improved electron‐transport properties and a high‐lying lowest unoccupied molecular orbital level. A power conversion efficiency of 11.4% with an impressive V OC of over 1 V is recorded in photovoltaic devices, suggesting that ITCC has great potential for applications in tandem organic solar cells.