Fully-printed high-performance organic thin-film transistors and circuitry on one-micron-thick polymer films

Kenjiro Fukuda (), Yasunori Takeda, Yudai Yoshimura, Rei Shiwaku, Lam Truc Tran, Tomohito Sekine, Makoto Mizukami, Daisuke Kumaki and Shizuo Tokito
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Kenjiro Fukuda: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Yasunori Takeda: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Yudai Yoshimura: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Rei Shiwaku: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Lam Truc Tran: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Tomohito Sekine: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Makoto Mizukami: Innovation Center for Organic Electronics (INOEL), Graduate School of Science and Engineering, Yamagata University
Daisuke Kumaki: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University
Shizuo Tokito: Research Center for Organic Electronics (ROEL), Graduate School of Science and Engineering, Yamagata University

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Thin, ultra-flexible devices that can be manufactured in a process that covers a large area will be essential to realizing low-cost, wearable electronic applications including foldable displays and medical sensors. The printing technology will be instrumental in fabricating these novel electronic devices and circuits; however, attaining fully printed devices on ultra-flexible films in large areas has typically been a challenge. Here we report on fully printed organic thin-film transistor devices and circuits fabricated on 1-μm-thick parylene-C films with high field-effect mobility (1.0 cm2 V−1 s−1) and fast operating speeds (about 1 ms) at low operating voltages. The devices were extremely light (2 g m−2) and exhibited excellent mechanical stability. The devices remained operational even under 50% compressive strain without significant changes in their performance. These results represent significant progress in the fabrication of fully printed organic thin-film transistor devices and circuits for use in unobtrusive electronic applications such as wearable sensors.

Date: 2014
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DOI: 10.1038/ncomms5147

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