Inkjet-Printed Organic Electrodes for Bottom-Contact Organic Field-Effect Transistors

Authors

  • Jing Zhang,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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  • Yan Zhao,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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  • Zhongming Wei,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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  • Yimeng Sun,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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  • Yudong He,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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  • Chong-an Di,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Wei Xu,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    • Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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  • Wenping Hu,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Yunqi Liu,

    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Daoben Zhu

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    • Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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Abstract

A graphite thin film was investigated as the drain and source electrodes for bottom-contact organic field-effect transistors (BC OFETs). Highly conducting electrodes (102 S cm−1) at room temperature were obtained from pyrolyzed poly(l,3,4-oxadiazole) (PPOD) thin films that were prepatterned with a low-cost inkjet printing method. Compared to the devices with traditional Au electrodes, the BC OFETs showed rather high performances when using these source/drain electrodes without any further modification. Being based on a graphite-like material these electrodes possess excellent compatibility and proper energy matching with both p- and n-type organic semiconductors, which results in an improved electrode/organic-layer contact and homogeneous morphology of the organic semiconductors in the conducting channel, and finally a significant reduction of the contact resistance and enhancement of the charge-carrier mobility of the devices is displayed. This work demonstrates that with the advantages of low-cost, high-performance, and printability, PPOD could serve as an excellent electrode material for BC OFETs.

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