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Nonfullerene Small-Molecule Acceptors with Perpendicular Side-Chains for Fullerene-Free Solar Cells

Abstract

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

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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, Accepted Manuscript
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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, Accepted Manuscript , DOI: 10.1039/C8TA04718A

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