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Research of mono alkylated liquid crystalline organic-semiconductors as quality transistor materials(Fostering Joint International Research)

Research Project

Project/Area Number 15KK0183
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research)

Allocation TypeMulti-year Fund
Research Field Device related chemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

Iino Hiroaki  東京工業大学, 科学技術創成研究院, 准教授 (50432000)

Project Period (FY) 2016 – 2019
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Keywordsモノアルキル鎖 / 液晶性有機半導体 / スメクチックE相 / バイレイヤー結晶構造 / モノレイヤー結晶構造 / モノアルキル鎖構造 / 電子・電気材料 / 半導体物性 / 表面・界面物性 / 自己組織化
Outline of Final Research Achievements

I have investigated the origin of high charge carrier mobility in crystalline thin films of liquid crystalline organic semiconductors after changing crystals structure by thermal annealing. The thermal annealing induced the transformation from monolayer to bilayer crystal structures on the surface of substrates, which are same structures as liquid crystal and single crystal, respectively. The organic transistors with proper electrode show low contact resistance and the mobility is close to the intrinsic mobility of crystalline thin films.

Academic Significance and Societal Importance of the Research Achievements

本研究で注目したモノアルキル鎖で高秩序の液晶相を示す有機トランジスタ材料は溶液プロセスでも平坦な結晶薄膜が作製できる。また、120℃5分間といった短時間の熱アニールにより結晶構造を変化させることで高移動度を示す有機トランジスタを作製できる工業的に有用な材料群といえる。本研究では高移動度の要因を検討することで、このような性質を持つ幅広い有機トランジスタ材料が期待でき、社会的・工業的な価値の高い結果といえる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (24 results)

All 2019 2018 2017

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 8 results,  Invited: 7 results) Book (1 results)

  • [Int'l Joint Research] ケンブリッジ大学(英国)2018

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ブリュッセル自由大学(ベルギー)2017

    • Year and Date
      2017-09-02
    • Related Report
      2019 Annual Research Report
  • [Journal Article] Carrier Transport Properties of Asymmetrically Substituted Calamitic Liquid Crystal in the Smectic A Phase of Dibenzo[c,h][2,6]naphthyridine Derivatives2019

    • Author(s)
      Yang Mingcong、Hanna Junichi、Iino Hiroaki
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 12 Pages: 1515-1518

    • DOI

      10.1246/cl.190604

    • NAID

      130007757509

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel calamitic liquid crystalline organic semiconductors based on electron-deficient dibenzo[c,h][2,6]naphthyridine: synthesis, mesophase, and charge transport properties by the time-of-flight technique2019

    • Author(s)
      Yang Ming-Cong、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 7 Issue: 42 Pages: 13192-13202

    • DOI

      10.1039/c9tc03990b

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 液晶性を活用した多結晶有機半導体の配向制御とそのデバイス応用2019

    • Author(s)
      飯野裕明
    • Journal Title

      応用物理学会 有機分子バイオエレクトロニクス分科会誌.

      Volume: 30 Pages: 155-158

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bilayered Crystalline Organic Semiconductors for Solution-processed OFETs: Asymmetricaly-substituted Smectic Liquid Crystal of Benzo[1,2-b:4,5-b']dithiophene Derivatives2018

    • Author(s)
      Wu Hao、Iino Hiroaki、Hanna Jun-ichi
    • Journal Title

      Chemistry Letters

      Volume: 24 Issue: 4 Pages: 510-513

    • DOI

      10.1246/cl.180066

    • NAID

      130006638875

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Liquid crystal and crystal structures of a phenyl-benzothienobenzothiophene derivative2017

    • Author(s)
      Iino Hiroaki、Hanna Jun-Ichi
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: 647 Issue: 1 Pages: 37-43

    • DOI

      10.1080/15421406.2017.1289427

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Thermally induced bilayered crystals in a solution-processed polycrystalline thin film of phenylterthiophene-based monoalkyl smectic liquid crystals and their effect on FET mobility2017

    • Author(s)
      Wu Hao、Iino Hiroaki、Hanna Jun-ichi
    • Journal Title

      RSC Advances

      Volume: 7 Issue: 89 Pages: 56586-56593

    • DOI

      10.1039/c7ra11727b

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Liquid Crystals as Organic Thin-Film Transistor Materials,2019

    • Author(s)
      Hiroaki Iino
    • Organizer
      2019 MRS Spring Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Liquid Crystals as Polycrystalline Materials for Organic Thin Film Transistors2019

    • Author(s)
      Hiroaki Iino,
    • Organizer
      Compound Semiconductor Week 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 液晶性を活用した高品質な多結晶有機半導体材料の開発とそのトランジスタ応用2019

    • Author(s)
      飯野裕明
    • Organizer
      2019年度 日本写真学会年次大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Synthesis of liquid crystals for organic transistors and their FET performance2018

    • Author(s)
      Hao Wu, Jun-ichi Hanna, Hiroaki Iino
    • Organizer
      27th International Liquid Crystal Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Carrier transport properties of Ph-BTBT derivative in Smectic E and crystal phases2018

    • Author(s)
      Hiroaki Iino, Hisashi Okamura, Akira Ohno, Jun-ichi Hanna
    • Organizer
      27th International Liquid Crystal Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Molecular design, synthesis, and characterization of SmE liquid crystals2018

    • Author(s)
      Jun-ichi Hanna, Hisashi Okamura, Hiroaki Iino
    • Organizer
      27th International Liquid Crystal Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 液晶性を活用した有機半導体の大面積薄膜作製プロセスと応用2018

    • Author(s)
      飯野裕明
    • Organizer
      第232回 JOEM 第229回TAPJ, 第229回フォトポリマー懇話会 フレキシブルエレクトロニクス
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 液晶性有機トランジスタ材料の特質と材料設計2018

    • Author(s)
      飯野裕明
    • Organizer
      本写真学会 第6回 アンビエント技術セミナー
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] モノアルキルSmE液晶物質の熱誘起される単分子層構造から2分子層構造への結晶-液晶転移におけるSmE相の役割2018

    • Author(s)
      Hao Wu, 半那純一, 飯野裕明
    • Organizer
      2018年日本液晶学会討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] Specific Nature of Monoalkylated Liquid Crystalline Organic Semiconductors for Organic Transistors and Its Generality2018

    • Author(s)
      Hao Wu, Jun-ichi Hanna, Hiroaki Iino
    • Organizer
      The 119th Annual Conference of the Imaging Society of Japan
    • Related Report
      2018 Research-status Report
  • [Presentation] 1本側鎖をもつSmE液晶物質の結晶膜の形成と有機トランジスタへの応用2018

    • Author(s)
      飯野裕明, 半那純一
    • Organizer
      第22回液晶化学研究会シンポジューム
    • Related Report
      2018 Research-status Report
  • [Presentation] High Quality Organic Thin Film Transistors Fabricated with Liquid Crystalline Organic-Semiconductors2017

    • Author(s)
      Hiroaki Iino, Jun-ichi Hanna
    • Organizer
      THE 24TH INTERNATIONAL DISPLAY WORKSHOPS
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Improvement of solubility in liquid crystalline Ph-BTBT derivatives chemically modified side chain and their transistor2017

    • Author(s)
      Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
    • Organizer
      9th International Conference on Molecular Electronics and Bioelectronics (M&BE9)(
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高秩序液晶相を利用した有機多結晶薄膜の作製とトランジスタ応用2017

    • Author(s)
      飯野裕明
    • Organizer
      応用物理学会NICE研究会・電気学会調査専門委員会合同研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Improvement of solubility for liquid crystalline Ph-BTBT derivatives by chemical modification in the end of side chain and their organic transistor characteristics2017

    • Author(s)
      Hiroaki Iino, Takayuki Usui, Jun-ichi Hanna
    • Organizer
      ECME2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] ”Liquid crystalline organic semiconductors” in "High Quality Liquid Crystal Displays and Smart Devices."2019

    • Author(s)
      Hiroaki Iino, Jun-ichi Hanna
    • Publisher
      The Institution of Engineering and Technology
    • ISBN
      9781785619236
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2016-10-04   Modified: 2023-01-30  

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