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Designing Efficient Non‐Fullerene Acceptors by Tailoring Extended Fused‐Rings with Electron‐Deficient Groups
Author(s) -
Lin Yuze,
Zhan Xiaowei
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201501063
Subject(s) - fullerene , materials science , organic solar cell , electron acceptor , imide , phthalocyanine , acceptor , ring (chemistry) , molecule , nanotechnology , electron , photochemistry , polymer , organic chemistry , polymer chemistry , chemistry , physics , condensed matter physics , quantum mechanics , composite material
In the past two years, non‐fullerene acceptors including polymers and small molecules have become the focus of many research efforts. Fullerene‐free organic solar cells (OSCs) have shown efficiencies of up to 6.8% for solution‐processed devices, and even up to 8.4% for vacuum‐deposited devices, which have been significantly improved relative to those disclosed 2 years ago (generally <4%). Non‐fullerene acceptor materials are a new focus in the OSC field. Tailoring extended fused‐rings with electron‐deficient groups is an effective strategy for design of acceptors. Here, very recent developments in several systems of fused ring‐based electron acceptors, such as halogenated (sub or subna)phthalocyanine, imide‐functionalized rylene, and linear fused‐rings end capped with electron deficient blocks, are reviewed.