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Simplified Large-Area Manufacturing of Organic Electrochemical Transistors Combining Printing and a Self-Aligning Laser Ablation Step

Authors

  • Thomas Blaudeck,

    1. Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden
    2. Chemnitz University of Technology, Institute for Print and Media Technology, 09107 Chemnitz, Germany
    3. Chemnitz University of Technology, Center for Microtechnologies, 09107 Chemnitz, Germany
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  • Peter Andersson Ersman,

    1. Acreo AB, Printed Electronics, 60221 Norrköping, Sweden
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  • Mats Sandberg,

    1. Acreo AB, Printed Electronics, 60221 Norrköping, Sweden
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  • Sebastian Heinz,

    1. Chemnitz University of Technology, Institute for Print and Media Technology, 09107 Chemnitz, Germany
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  • Ari Laiho,

    1. Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden
    2. Aalto University School of Science and Technology, Advanced Magnetic Imaging Centre, 02150 Espoo, Finland
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  • Jiang Liu,

    1. Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden
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  • Isak Engquist,

    1. Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden
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  • Magnus Berggren,

    Corresponding author
    1. Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden
    • Linköping University, Department of Science and Technology (ITN), Organic Electronics, 60174 Norrköping, Sweden.
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  • Reinhard R. Baumann

    1. Chemnitz University of Technology, Institute for Print and Media Technology, 09107 Chemnitz, Germany
    2. Fraunhofer Institute for Electronic Nanosystems (ENAS), Department Printed Functionalities, 09126 Chemnitz, Germany
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Abstract

A hybrid manufacturing approach for organic electrochemical transistors (OECTs) on flexible substrates is reported. The technology is based on conventional and digital printing (screen and inkjet printing), laser processing, and post-press technologies. A careful selection of the conductive, dielectric, and semiconductor materials with respect to their optical properties enables a self-aligning pattern formation which results in a significant reduction of the usual registration problems during manufacturing. For the prototype OECTs, based on this technology, on/off ratios up to 600 and switching times of 100 milliseconds at gate voltages in the range of 1 V were obtained.

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