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Side-chain engineering of perylenediimide-vinylene polymer acceptors for high-performance all-polymer solar cells

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Abstract

The side-chain structures of conjugated molecules are well recognized to sensitively influence the crystallinity, morphology and thus carrier transport properties of organic semiconductors. Here, by varying the alkyl side-chain length in the polymer acceptors, the effect of side-chain engineering on the photovoltaic performance is systematically studied in all-polymer solar cells. Clear trends of first an increase and then a decrease in the Jsc and FF values are observed as the branched alkyl groups are extended from 4 to 8 carbons. Correspondingly, the maximum average PCE (ca. 7.40%) is attained with an acceptor bearing a branched side-chain length of seven carbon atoms.

Graphical abstract: Side-chain engineering of perylenediimide-vinylene polymer acceptors for high-performance all-polymer solar cells

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Publication details

The article was received on 08 Dec 2016, accepted on 15 Feb 2017 and first published on 16 Feb 2017


Article type: Research Article
DOI: 10.1039/C6QM00355A
Citation: Mater. Chem. Front., 2017, Advance Article
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    Side-chain engineering of perylenediimide-vinylene polymer acceptors for high-performance all-polymer solar cells

    Y. Guo, Y. Li, O. Awartani, H. Han, G. Zhang, H. Ade, H. Yan and D. Zhao, Mater. Chem. Front., 2017, Advance Article , DOI: 10.1039/C6QM00355A

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