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Issue 32, 2018
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Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells

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Abstract

Organic photovoltaics (OPVs) represent one of the potential candidates of next-generation solar cells for converting green and sustainable solar energy into electrical power. An OPV cell utilizes a blend of electron donor (D) and electron acceptor (A) materials as photo-active layers, where photogenerated excitons are separated into mobile electrons and holes. Relative to fullerene acceptors, nonfullerene small-molecule acceptors (NF-SMAs) have several advantages such as synthesis-facile chemical modifications and straightforward tunability in absorptivity, spectral coverage, optical band gap, and Frontier molecular orbitals. In the recent 3 years, progress in design and synthesis of fused-ring NF-SMAs with perpendicular side-chains on an electron-rich core, and again, on design and synthesis of wide/medium/low band gap polymer donors have led to realizations of over 13% power conversion efficiencies (PCEs). These rapid advances require timely review articles. In this review article, we focus on this type of fused-ring NF-SMAs reported in the past 3 years, with special attention on their molecular structure design and structure–property relationships.

Graphical abstract: Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells

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Publication details

The article was received on 21 May 2018, accepted on 10 Jul 2018 and first published on 10 Jul 2018


Article type: Review Article
DOI: 10.1039/C8TA04718A
Citation: J. Mater. Chem. A, 2018,6, 15433-15455
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    Nonfullerene small-molecule acceptors with perpendicular side-chains for fullerene-free solar cells

    F. Shen, J. Xu, X. Li and C. Zhan, J. Mater. Chem. A, 2018, 6, 15433
    DOI: 10.1039/C8TA04718A

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