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Development of quality N-channel organic transistor using calamitic liquid crystals

Research Project

Project/Area Number 20K05644
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35030:Organic functional materials-related
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) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords有機半導体 / 液晶性 / 有機トランジスタ / Nチャネル / 電荷移動錯体 / 溶液プロセス / Nチャネル有機トランジスタ / 液晶性有機半導体 / 液晶性IQIQ誘導体 / 液晶性DBN誘導体 / 液晶性ペリレンジイミド誘導体 / 液晶性ジアルキルBTBT誘導体 / Nチャネルトランジスタ / 棒状液晶材料
Outline of Research at the Start

通常の溶液プロセスで作製可能な高品質なNチャネルの有機トランジスタの実現を目指す。溶液プロセスでも結晶性が高く平坦性に優れた多結晶薄膜が作製でき、高移動度を示す棒状液晶材料に注目する。Nチャネルで動作させるために電極からの電子注入が容易でトラップの影響を受けにくい深いLUMOレベルを有する棒状の液晶性有機半導体として細長い縮環構造に窒素原子を有する2つの誘導体を合成し、その材料を用いた溶液プロセスでの製膜とトランジスタ特性の評価を行う。

Outline of Final Research Achievements

I have researched rod-like liquid crystalline organic semiconductor for N-channel organic transistors fabricated with simple solution process. I succeeded to develop new liquid crystalline organic semiconductor having deep LUMO (lowest unoccupied molecular orbital) level. It was easy for the new liquid crystalline materials to fabricate uniform polycrystalline thin films using liquid crystallinity. However, the low crystallinity of the polycrystalline thin film did not exhibit N-channel operation in the organic transistors. On the other hand, I succeeded to develop new technique to fabricate uniform charge transfer complex thin films by thermal diffusion of accepter molecules to the layer of liquid crystalline organic semiconductors. The charge transfer complex exhibits good N-channel organic transistor and stable operation under atmosphere conditions.

Academic Significance and Societal Importance of the Research Achievements

これまでNチャネルの有機トランジスタは、単結晶薄膜を用いるなど製膜速度が遅く大面積への適用性が困難であった。本研究では、液晶性を活用した溶液プロセスにより作製した平坦な多結晶薄膜に、アクセプタ分子の熱拡散という新たな技術を導入することで、平坦性・均一性の高い電荷移動錯体薄膜を容易に形成することに成功した。この電荷移動錯体薄膜を用いたところ、特性のそろったNチャネルの有機トランジスタが実現できており、低消費電力の電子回路に必須な相補型の有機電子回路の実現に大きな寄与を与えるものと期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (24 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 3 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] High-performance organic field effect transistor of liquid crystalline organic semiconductor using silver electrodes with bottom-gate top-contact configuration2023

    • Author(s)
      Kang Sabina、Aburada Kai、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Applied Physics Express

      Volume: 16 Issue: 9 Pages: 091005-091005

    • DOI

      10.35848/1882-0786/acf6f1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flexible Organic Thin‐Film Transistors with Liquid‐Crystalline Organic Semiconductor, Ph‐BTBT‐102023

    • Author(s)
      Suzuki Issei、Koizumi Shohei、Kito Yoshiaki、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      physica status solidi (a)

      Volume: 220 Issue: 24 Pages: 2300281-2300281

    • DOI

      10.1002/pssa.202300281

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Universally Exhaustive Generation of Molecular Structures and Prediction of Their Electronic States Using Machine Learning for N‐type Organic Transistor Materials2023

    • Author(s)
      Ohno Akira、Hanna Jun‐ichi、Iino Hiroaki、Nakago Kosuke、Yamaguchi Taiki、Abe Motoki、Akita Hirotaka、Takemoto Mizuki
    • Journal Title

      Chemistry- An Asian Journal

      Volume: 18 Issue: 8

    • DOI

      10.1002/asia.202300029

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interface engineering to enhance charge carrier injection in Ph-BTBT-10 organic thin-film transistor with silver source-drain electrodes2023

    • Author(s)
      Kang Sabina、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: 2023 Issue: 1 Pages: 1-8

    • DOI

      10.1080/15421406.2023.2176034

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Solution-processed near-infrared organic photodetector based on a liquid crystalline phthalocyanine derivative for vital signal monitoring2023

    • Author(s)
      Kabir Shahriar、Takayashiki Yukiko、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: SC Pages: SC1013-SC1013

    • DOI

      10.35848/1347-4065/acaa42

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Liquid crystalline self-assembly of azulene?thiophene hybrids and their applications as OFET materials2022

    • Author(s)
      Schulz Finn、Takamaru Shun、Bens Tobias、Hanna Jun-ichi、Sarkar Biprajit、Laschat Sabine、Iino Hiroaki
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 24 Issue: 38 Pages: 23481-23489

    • DOI

      10.1039/d2cp03527h

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Near-infrared organic photodetectors with a soluble Alkoxy-Phthalocyanine derivative2022

    • Author(s)
      Kabir Shahriar、Takayashiki Yukiko、Ohno Akira、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Optical Materials

      Volume: 126 Pages: 112209-112209

    • DOI

      10.1016/j.optmat.2022.112209

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Novel fabrication process of charge transfer complex thin films for large area by thermal diffusion and their n-channel organic transistor operation2022

    • Author(s)
      Takamaru Shun、Hanna Jun-ichi、Iino Hiroaki
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 3 Pages: 031001-031001

    • DOI

      10.35848/1882-0786/ac516a

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Use of doping to achieve low contact resistance in bottom-gate top-contact type organic transistor with liquid-crystalline organic semiconductor, Ph-BTBT-102021

    • Author(s)
      Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 60 Issue: SB Pages: SBBG08-SBBG08

    • DOI

      10.35848/1347-4065/abeac3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Scalable Ultrahigh-Speed Fabrication of Uniform Polycrystalline Thin Films for Organic Transistors2020

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

      ACS Appl. Mater. Interfaces

      Volume: 12 Pages: 29497-29504

    • DOI

      10.1021/acsami.0c05105

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Threshold Voltage Control of Organic Transistors Using Liquid Crystalline Organic Semiconductor Ph-BTBT-10 by Doping2023

    • Author(s)
      Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
    • Organizer
      Internatinal conference on Solid state Devices and Materials
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NEAR-INFRARED ORGNIC PHOTODIODE WITH LIQUID CRYSTALLINE PHTHALOCYANINE DERIVATIVE FOR PHOTOPLETHYSMOGRAM SILGNAL2023

    • Author(s)
      Hiroaki Iino, Shahriar Kabir, Yukiko Takayashiki, Jun-ichi Hanna
    • Organizer
      The 22nd International Discussion & Conference on Nano Interface Controlled Electronic Devices (IDC-NICE 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 自己組織化を有する有機半導体材料とその有機電子デバイス応用2023

    • Author(s)
      飯野裕明
    • Organizer
      第165回 キンカ東京サロン
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 熱拡散による電荷移動錯体の薄膜形成と N チャネル有機トランジスタの開発2023

    • Author(s)
      高丸 俊, 半那純一, 飯野裕明
    • Organizer
      2023年度 日本写真学会年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 熱拡散法による電界移動錯体薄膜の作製と N チャネル有機トランジスタ2022

    • Author(s)
      高丸俊,半那純一,飯野裕明
    • Organizer
      第129回日本画像学会年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 溶液プロセスによるドナーとアクセプターの積層及び熱拡散を用いた電荷移動錯体の形成と薄膜トランジスタの作製2022

    • Author(s)
      高丸俊,半那純一,飯野裕明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Ph-BTBT-10とF4-TCNQの電荷移動錯体薄膜の形成とトランジスタ動作2021

    • Author(s)
      高丸 俊, 半那 純一, 飯野 裕明
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Novel fabrication process of charge transfer complex thin films using liquid crystallinity2021

    • Author(s)
      Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
    • Organizer
      The 11th International Conference on Flexible and Printed Electronics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 溶液プロセスによるドナーとアクセプターの積層及び熱拡散を用いた電荷移動錯体の形成と薄膜トランジスタの作製2021

    • Author(s)
      高丸 俊, 半那 純一, 飯野 裕明
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] ペリレンジイミド誘導体の液晶性を活用した結晶成長とトランジスタ特性2021

    • Author(s)
      藤澤直正, 半那 純一, 飯野 裕明
    • Organizer
      第68回応用物理学会秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Small contact resistance using doping for top contact type organic transistor with liquid crystalline organic semiconductor, Ph-BTBT-102020

    • Author(s)
      Shun Takamaru, Jun-ichi Hanna, Hiroaki Iino
    • Organizer
      2020 Internatinal conference on Solid state Devices and Materials
    • Related Report
      2020 Research-status Report
  • [Presentation] 液晶性ペリレンジイミド誘導体を用いたnチャネル有機トランジスタ2020

    • Author(s)
      藤澤 直正, 村井 智昭, 高屋敷 由紀子, 半那 純一, 飯野 裕明
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 液晶性有機半導体におけるアクセプター分子の熱拡散による電荷移動錯体の形成とnチャネル有機トランジスタ動作2020

    • Author(s)
      高丸 俊, 半那 純一, 飯野 裕明
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Scalable ultrahigh-speed fabrication of uniform crystalline thin films for organic transistors2020

    • Author(s)
      Hao WU, Hiroaki Iino, Jun-ichi Hanna
    • Organizer
      The 81st JSAP Fall Meeting
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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