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Issue 8, 2015
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Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%

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Abstract

We report the properties of a new series of wide band gap photovoltaic polymers based on the N-alkyl 2-pyridone dithiophene (PDT) unit. These polymers are effective bulk heterojunction solar cell materials when blended with phenyl-C71-butyric acid methyl ester (PC71BM). They achieve power conversion efficiencies (up to 5.33%) high for polymers having such large bandgaps, ca. 2.0 eV (optical) and 2.5 eV (electrochemical). Grazing incidence wide-angle X-ray scattering (GIWAXS) reveals strong correlations between π–π stacking distance and regularity, polymer backbone planarity, optical absorption maximum energy, and photovoltaic efficiency.

Graphical abstract: Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%

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Publication details

The article was received on 20 Apr 2015, accepted on 04 Jun 2015 and first published on 04 Jun 2015


Article type: Edge Article
DOI: 10.1039/C5SC01427A
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Citation: Chem. Sci., 2015,6, 4860-4866
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    Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%

    A. M. Schneider, L. Lu, E. F. Manley, T. Zheng, V. Sharapov, T. Xu, T. J. Marks, L. X. Chen and L. Yu, Chem. Sci., 2015, 6, 4860
    DOI: 10.1039/C5SC01427A

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