DNA Interlayers Enhance Charge Injection in Organic Field-Effect Transistors

Authors

  • Yuan Zhang,

    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • Peter Zalar,

    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • Chunki Kim,

    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • Samuel Collins,

    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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  • Guillermo C. Bazan,

    Corresponding author
    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
    • Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
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  • Thuc-Quyen Nguyen

    Corresponding author
    1. Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
    • Center for Polymers and Organic Solids, Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.
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Abstract

original image

By inserting DNA interlayers beneath the Au contact, the contact resistance of PC70BM field-effect transistorss is reduced by approximately 30 times at a gate bias of 20 V. The electron and hole mobilities of ambipolar diketopyrrolopyrrole transistors are increased by one order of magnitude with a reduction of the threshold voltage from 12 to 6.5 V.

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