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Issue 32, 2017
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Poly(3-hexylthiophene)-based non-fullerene solar cells achieve high photovoltaic performance with small energy loss

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Abstract

Regioregular poly(3-hexylthiophene) (P3HT) as one of the most commonly used and thoroughly studied homopolymers has been demonstrated to be a promising commercial candidate for large-area, roll-to-roll printed solar cells. In this work, we designed a new low-bandgap electron acceptor material ATT-3 by combining rhodanine and octyl thieno[3,4-b]thiophene-2-carboxylate as the electron-deficient part. ATT-3 shows a planar backbone configuration facilitating charge transport and exhibits strong and broad absorption ranging from 300 to 770 nm with an optical bandgap of 1.61 eV. ATT-3 shows a complementary absorption and well-matched HOMO and LUMO energy levels with P3HT. P3HT:ATT-3-based PSCs show a high PCE of 6.26% with a high Voc of 0.927 V and a small energy loss of 0.68 eV, which is comparable to the best value obtained by using an O-IDTBR acceptor.

Graphical abstract: Poly(3-hexylthiophene)-based non-fullerene solar cells achieve high photovoltaic performance with small energy loss

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Publication details

The article was received on 12 Jun 2017, accepted on 14 Jul 2017 and first published on 14 Jul 2017


Article type: Communication
DOI: 10.1039/C7TA05108E
Citation: J. Mater. Chem. A, 2017,5, 16573-16579
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    Poly(3-hexylthiophene)-based non-fullerene solar cells achieve high photovoltaic performance with small energy loss

    F. Liu, J. Zhang, Z. Zhou, J. Zhang, Z. Wei and X. Zhu, J. Mater. Chem. A, 2017, 5, 16573
    DOI: 10.1039/C7TA05108E

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