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Advanced Materials

Fullerene Bisadducts for Enhanced Open-Circuit Voltages and Efficiencies in Polymer Solar Cells

Authors

  • Martijn Lenes,

    1. Molecular Electronics, Zernike Institute for Advanced Materials University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
    2. Dutch Polymer Institute P.O. Box 902, 5600 AX, Eindhoven (The Netherlands)
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  • Gert-Jan A. H. Wetzelaer,

    1. Molecular Electronics, Zernike Institute for Advanced Materials University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
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  • Floris B. Kooistra,

    1. Molecular Electronics, Zernike Institute for Advanced Materials University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
    2. Molecular Electronics, Stratingh Institute for Chemistry University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
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  • Sjoerd C. Veenstra,

    1. Energy Research Centre of the Netherlands (ECN) P.O. Box 1, 1755 ZG Petten (The Netherlands)
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  • Jan C. Hummelen,

    1. Molecular Electronics, Zernike Institute for Advanced Materials University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
    2. Molecular Electronics, Stratingh Institute for Chemistry University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
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  • Paul W. M. Blom

    Corresponding author
    1. Molecular Electronics, Zernike Institute for Advanced Materials University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands)
    • Molecular Electronics, Zernike Institute for Advanced Materials, University of Groningen Nijenborgh 4, 9747 AG, Groningen (The Netherlands).
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  • The work of M. Lenes forms part of the research program of the Dutch Polymer Institute (project #524). The authors would like to thank W.J.H. Verhees at the ECN for his assistance with the calibrated efficiency measurements.

Abstract

A fullerene bisadduct can enhance the efficiency of polymer:fullerene bulk heterojunction solar cells. The bisadduct has a LUMO that is 100 meV higher compared to that of [6,6]-phenyl C61 butyric acid methyl ester (PCBM). This increases the open-circuit voltage of polymer:fullerene bulk heterojunction solar cells based on poly(3-hexylthio phene) and bisadduct PCBM to 0.73 V, while maintaining high fill factors and currents.

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