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Epitaxial growth of high-mobility organic semiconductor single crystal films using liquid crystal solvent

Research Project

Project/Area Number 15H03982
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionTohoku University

Principal Investigator

FUJIKAKE HIDEO  東北大学, 工学研究科, 教授 (20643331)

Co-Investigator(Kenkyū-buntansha) 石鍋 隆宏  東北大学, 工学研究科, 准教授 (30361132)
柴田 陽生  東北大学, 工学研究科, 助教 (70771880)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2015: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords可溶性有機半導体 / 液晶溶媒 / 光配光膜 / 塗布 / 単結晶成長 / X線構造解析 / 有機トランジスタ / 電荷移動度 / 単結晶 / 単結晶薄膜 / エピタキシャル成長 / 単結晶薄板 / 液晶溶液
Outline of Final Research Achievements

For establishing flexible electronics leading future information society, flexible high-mobility organic semiconductor single crystals will be necessary, which can be easily obtained by coating and printing unlike conventional vacuum deposition and photolithography. At first, single crystal growth of soluble organic semiconductor was confirmed by coating a liquid crystal solution of the organic semiconductor on a conventional rubbed alignment layer of a glass substrate. Furthermore, it was shown that the single crystal orientation can be determined by a more-flat photo-alignment layer which can easily control in-plane orientation. It is thought that the formation of this single crystal film is due to layered growth from the alignment layer surface. Finally, an organic transistor was fabricated using the segregated single crystal, and the anisotropy of charge mobility was measured. As a result, the design method of organic semiconductor was obtained for transistor application.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (7 results)

All 2018 2016 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Single crystalline growth of a soluble organic semiconductor in a parallel aligned liquid crystal solvent using rubbing-treated polyimide films2016

    • Author(s)
      Tomoya Matsuzaki, Yosei Shibata, Risa Takeda, Takahiro Ishinabe, Hideo Fujikake
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 56

    • NAID

      210000147330

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 液晶溶媒で結晶方位が制御されたC8BTBT単結晶トランジスタの作製2018

    • Author(s)
      武田理紗、柴田陽生、石鍋隆宏、藤掛英夫
    • Organizer
      応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Formation of C8BTBT Single Crystal Thin Films by Coating Liquid Crystal and Organic Semiconductor Solution on Photo-Alignment Layer2016

    • Author(s)
      Risa Takeda, Yosei Shibata, Takahiro Ishinabe, Hideo Fujikake
    • Organizer
      International Display Workshops
    • Place of Presentation
      福岡国際会議場(福岡県福岡市)
    • Year and Date
      2016-12-08
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anisotropic Growth and Structural Analysis of Single Crystal Using Liquid Crystal Solvent for Molecular Alignment Controlled Organic Transistors2016

    • Author(s)
      Yosei Shibata, Tomoya Matsuzaki, Takahiro Ishinabe, Hideo Fujikake
    • Organizer
      SID International Symposium
    • Place of Presentation
      Moscone Convention Center (San Francisco City, USA)
    • Year and Date
      2016-05-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光配向膜と液晶溶媒を用いた有機半導体単結晶成長2016

    • Author(s)
      藤掛英夫、石鍋隆宏、柴田陽生、武田理紗
    • Organizer
      映像情報メディア学会発光型/非発光型ディスプレイ合同研究会
    • Place of Presentation
      富山大学(富山県富山市)
    • Year and Date
      2016-01-29
    • Related Report
      2015 Annual Research Report
  • [Presentation] Large-Area Uniform Film Formation and Optical Anisotropy of Soluble Organic Semiconductor Single Crystals in Liquid Crystal Solutions2015

    • Author(s)
      Hideo Fujikake, Takahiro Ishinabe, Tomoya Matsuzaki
    • Organizer
      International Display Workshops
    • Place of Presentation
      大津プリンスホテル(滋賀県大津市)
    • Year and Date
      2015-12-10
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 液晶溶媒中で成長させた可溶性有機半導体単結晶の光学異方性2015

    • Author(s)
      藤掛英夫、石鍋隆宏、松崎智也
    • Organizer
      日本液晶学会討論会
    • Place of Presentation
      東京工業大学(神奈川県横浜市)
    • Year and Date
      2015-09-07
    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2019-03-29  

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