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Performance improvement of organic thin-film transistors using cardo polymer as the gate dielectric and application to a flexible display

Research Project

Project/Area Number 25820119
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Electronic materials/Electric materials
Research InstitutionYamagata University

Principal Investigator

OKU Shinya  山形大学, 理工学研究科, 助教 (80625525)

Co-Investigator(Renkei-kenkyūsha) CHO Seung-Il  山形大学, 大学院理工学研究科, 助教 (10732464)
MIZUKAMI Makoto  山形大学, 大学院理工学研究科, 准教授 (70625524)
TOKITO Shizuo  山形大学, 大学院理工学研究科, 教授 (80197863)
SAKANOUE Tomo  早稲田大学, 理工学術院, 准教授 (60615681)
Research Collaborator TATETSU Masahiro  
ABIKO Miho  
TAKANO Masaomi  
FUKUMATSU Noriyuki  
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords有機トランジスタ / カルド / ディスプレイ / 絶縁膜 / 有機EL / 高分子
Outline of Final Research Achievements

In this project, we investigated the performance characteristic of cardo polymer gate dielectric for organic thin-film transistors (OTFTs). The 400-nm-thick films of a spin-coated cardo polymer had very low surface roughness and excellent electrical insulating properties. The bottom-contact type, pentacene-based short channel OTFT showed excellent performance such as a hole mobility of 0.15 cm^2/Vs and large ON/OFF ratio of above 10^7. In addition, the fabricated OTFT demonstrated high stability against gate bias stress.
Moreover, we fabricated organic light-emitting diode (OLED) display driven by active matrix backplane based on solution-processed OTFTs using cardo polymer gate dielectric. It had 384 × 128 pixels at a resolution of 300 dpi, and successfully displayed images and videos.
These results demonstrate that our cardo polymer material is a good candidate for a physically and chemically robust dielectric material suitable for realizing various flexible electronics applications.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (9 results)

All 2014 2013 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Fluorosurfactant-assisted photolithography for patterning of perfluoropolymers and solution-processed organic semiconductors for printed displays2014

    • Author(s)
      Tomo Sakanoue, Makoto Mizukami, Shinya Oku, Yudai Yoshimura, Miho Abiko and Shizuo Tokito
    • Journal Title

      Applied Physics Express

      Volume: 7 Issue: 10 Pages: 101602-101602

    • DOI

      10.7567/apex.7.101602

    • NAID

      210000137245

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 3.有機TFTで駆動するフレキシブル有機ELディスプレイ2013

    • Author(s)
      奥慎也,水上誠,時任静士
    • Journal Title

      Electrochemistry

      Volume: 81 Issue: 6 Pages: 478-483

    • DOI

      10.5796/electrochemistry.81.478

    • NAID

      10031159266

    • ISSN
      1344-3542, 2186-2451
    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 塗布型有機トランジスタ駆動によるフレキシブル有機ELディスプレイの開発2014

    • Author(s)
      水上誠,奥慎也,時任静士
    • Organizer
      映像情報メディア学会 情報ディスプレイ研究会
    • Place of Presentation
      機械振興会館(東京都港区)
    • Year and Date
      2014-07-29
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] 塗布型有機TFTを用いたフレキシブル有機ELディスプレイの開発2014

    • Author(s)
      水上誠,安彦美穂,立津雅弘,奥慎也,儘田正史,趙勝一,時任静士
    • Organizer
      有機EL討論会 第18回例会
    • Place of Presentation
      千葉大学けやき会館(千葉県千葉市)
    • Year and Date
      2014-07-17 – 2014-07-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] カルド樹脂をゲート絶縁膜に用いた高安定な有機TFT2013

    • Author(s)
      奥慎也,坂上知,熊木大介,水上誠,時任静士
    • Organizer
      第74回応用物理学会秋季学術講演会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Related Report
      2013 Research-status Report
  • [Presentation] 有機TFTを用いたフレキシブル有機ELディスプレイの要素技術開発2013

    • Author(s)
      水上誠,安彦美穂,立津雅弘,奥慎也,儘田正史,坂上知,時任静士
    • Organizer
      有機EL討論会 第16回例会
    • Place of Presentation
      日本科学未来館(東京都江東区)
    • Related Report
      2013 Research-status Report
  • [Remarks] 山形大学有機エレクトロニクス研究センター 時任・熊木・福田研究室ホームページ

    • URL

      http://tokitolabo.yz.yamagata-u.ac.jp/html/index.html

    • Related Report
      2013 Research-status Report
  • [Patent(Industrial Property Rights)] ゲート絶縁膜、有機薄膜トランジスタ、及び有機薄膜トランジスタの製造方法2013

    • Inventor(s)
      奥慎也、ほか5名
    • Industrial Property Rights Holder
      国立大学法人山形大学、新日鉄住金化学株式会社
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2013-177649
    • Filing Date
      2013-08-29
    • Related Report
      2013 Research-status Report
  • [Patent(Industrial Property Rights)] ゲート絶縁膜、有機薄膜トランジスタ、及び有機薄膜トランジスタの製造方法2013

    • Inventor(s)
      奥慎也、ほか5名
    • Industrial Property Rights Holder
      国立大学法人山形大学、新日鉄住金化学株式会社
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2013-177648
    • Filing Date
      2013-08-29
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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