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Issue 42, 2015
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Two-dimensional quinoxaline based low bandgap conjugated polymers for bulk-heterojunction solar cells

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Abstract

Two novel two-dimensional quinoxaline derivatives, DTPQx and DTDBPz, based copolymers, P2 and P3, were synthesized through Suzuki polycondensation reaction. Meanwhile, the DPQx based polymer P1 was also designed for comparison. The UV-vis absorptions, thermal stabilities, energy levels, field-effect carrier mobilities and photovoltaic characteristics of these three copolymers were systematically evaluated to understand the relationship between the polymer structure at the molecular level and the photovoltaic performances. Photovoltaic cells based on the two-dimensional quinoxaline-based polymers, P2 and P3, with a structure of ITO/PEDOT:PSS/polymer : PC71BM/Ca/Al exhibited PCEs of over 3% compared to the PCE of less than 2% in the P1-based device.

Graphical abstract: Two-dimensional quinoxaline based low bandgap conjugated polymers for bulk-heterojunction solar cells

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Publication details

The article was received on 03 Jul 2015, accepted on 25 Aug 2015 and first published on 26 Aug 2015


Article type: Paper
DOI: 10.1039/C5PY01027F
Citation: Polym. Chem., 2015,6, 7436-7446

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    Two-dimensional quinoxaline based low bandgap conjugated polymers for bulk-heterojunction solar cells

    S. Li, T. Yuan, G. Tu, J. Zhang and Z. Li, Polym. Chem., 2015, 6, 7436
    DOI: 10.1039/C5PY01027F

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