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Design of a New Fused‐Ring Electron Acceptor with Excellent Compatibility to Wide‐Bandgap Polymer Donors for High‐Performance Organic Photovoltaics
Author(s) -
Liu Wenrui,
Zhang Jianyun,
Zhou Zichun,
Zhang Dongyang,
Zhang Yuan,
Xu Shengjie,
Zhu Xiaozhang
Publication year - 2018
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.201800403
Subject(s) - materials science , compatibility (geochemistry) , thiophene , acceptor , polymer , organic solar cell , photovoltaics , nanotechnology , chemical engineering , optoelectronics , photovoltaic system , organic chemistry , composite material , electrical engineering , chemistry , physics , engineering , condensed matter physics
Fused‐ring electron acceptors (FREAs) have recently received intensive attention. Besides the continuing development of new FREAs, the demand for FREAs featuring good compatibility to donor materials is becoming more and more urgent, which is highly desirable for screening donor materials and achieving new breakthroughs. In this work, a new FREA is developed, ZITI , featuring an octacyclic dithienocyclopentaindenoindene central core. The core is designed by linking 2,7‐dithienyl substituents and indenoindene with small methylene groups, in which the indeno[1,2‐ b ]thiophene‐2‐(3‐oxo‐2,3‐dihydro‐1 H ‐inden‐1‐ylidene)malononitrile part provides a large and unoccupied π‐surface. Most notably, ZITI possesses an excellent compatibility with commercially available polymer donors, delivering very high power conversion efficiencies of over 13%.