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Quinacridone-Based Electron Transport Layers for Enhanced Performance in Bulk-Heterojunction Solar Cells

Authors

  • Toan V. Pho,

    1. Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara
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  • Heejoo Kim,

    1. Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara
    Current affiliation:
    1. Heeger Center for Advanced Materials, Gwangju Institute of Science and Technology, South Korea
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  • Jung Hwa Seo,

    1. Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara
    Current affiliation:
    1. Department of Materials Physics, Dong-A University, South Korea
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  • Alan J. Heeger,

    1. Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara
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  • Fred Wudl

    Corresponding author
    1. Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara
    • Department of Chemistry and Biochemistry & Center for Polymers and Organic Solids, University of California, Santa Barbara.
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Abstract

A water/alcohol-soluble small molecule based on the commercially available pigment quinacridone is employed as an electron transport layer in organic photovoltaics. The quinacridone derivative is utilized in solution-processed bulk-heterojunction solar cells to improve primarily the fill factor of the devices, contributing to an upwards of 19% enhancement in the power conversion efficiency relative to the control devices with no electron transport layer. The facile synthesis of the quinacridone derivative coupled with the ease of device fabrication via solution processing provide a simple, yet effective means of improving the performance of existing organic photovoltaic cells.

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