• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2021 Fiscal Year Annual Research Report

Development of a Simple, Scalable, and Vacuum-Free Method to Fabricate Organic Semiconductor Single Crystals with Area Selectivity for High Performance Organic Field-Effect Transistor Applications

Research Project

Project/Area Number 20K22421
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Bulgarevich Kirill  国立研究開発法人理化学研究所, 創発物性科学研究センター, 特別研究員 (60880268)

Project Period (FY) 2020-09-11 – 2022-03-31
Keywords有機トランジスタ / 単結晶有機半導体 / 大気中蒸着 / パターン化結晶成長 / 表面エネルギーパターン
Outline of Annual Research Achievements

The microspacing in-air sublimation (MAS) method was successfully used to grow and evaluate single crystal (SCs) of various organic semiconductor (OSC) materials including rubrene, pentacene, DNTT, and novel OSCs developed in our group. The growth of SCs via the liquid phase (essential for the proposed research) was also realized, but only for rubrene. For most OSCs useful for organic field-effect transistors (OFETs) applications, nucleation turned out to be too rapid to form droplets during MAS. Patterned MAS was performed using octadecyltrichlorosilane/bare SiO2/Si substrates (prepared by ultraviolet light exposure through a photomask). As expected, much larger droplets of rubrene formed on bare areas resulting in much larger SCs. Unfortunately, the resulting SCs were mostly of block-type irregular shape which made their application in OFET arrays difficult.
Novel OSCs were developed including 1,3,6,8-tetrakis(methylthio)pyrene (MT-pyrene). SCs of MT-pyrene grown by MAS and physical vapor transport (PVT) demonstrated very high mobility of >30 cm2 V-1 s-1 as OFETs. these results were selected as a cover picture for Advanced Materials.
Although MT-pyrene did not form droplets during MAS (not applicable for patterned growth), a novel method to potentially fabricate OFET arrays using SCs was found. In the new method based on MAS, the direct passes between source and target substrates are intentionally blocked, which highly improves uniformity of crystal growth. The application of this method to produce functioning "multi-SC" films was made into a new KAKENHI project (22K14293).

Remarks

雑誌論文1はAdvanced MaterialsのCover picture論文として採択

  • Research Products

    (5 results)

All 2022 2021 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (2 results) Remarks (1 results)

  • [Journal Article] Bandlike versus Temperature-Independent Carrier Transport in Isomeric Diphenyldinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophenes2022

    • Author(s)
      Takimiya Kazuo、Bulgarevich Kirill、Horiuchi Shingo、Sato Aoi、Kawabata Kohsuke
    • Journal Title

      ACS Materials Letters

      Volume: 4 Pages: 675~681

    • DOI

      10.1021/acsmaterialslett.2c00084

    • Peer Reviewed
  • [Journal Article] “Manipulation” of Crystal Structure by Methylthiolation Enabling Ultrahigh Mobility in a Pyrene‐Based Molecular Semiconductor2021

    • Author(s)
      Takimiya Kazuo、Bulgarevich Kirill、Abbas Mamatimin、Horiuchi Shingo、Ogaki Takuya、Kawabata Kohsuke、Ablat Abduleziz
    • Journal Title

      Advanced Materials

      Volume: 33 Pages: 2102914~2102914

    • DOI

      10.1002/adma.202102914

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] カルコゲン原子の違いによるメチルカルコゲノ化ピレン の結晶構造と電荷輸送特性への影響2022

    • Author(s)
      Kirill Bulgarevich、瀧宮 和男、大垣 拓也、堀内 信吾
    • Organizer
      第68回応用物理学会春季学術講演会
  • [Presentation] メチル化ピレン単結晶の高性能 有機トランジスタ2021

    • Author(s)
      Kirill Bulgarevich、瀧宮和男、Mamatimin Abbas、堀内信吾、大垣拓也、川畑公輔、Abduleziz Ablat
    • Organizer
      第82回応用物理学会秋季学術講演会
  • [Remarks] 「超」高移動度、低電圧駆動できる有機半導体材料-結晶構造制御により高性能化-

    • URL

      https://www.riken.jp/press/2021/20210705_4/index.html

URL: 

Published: 2022-12-28  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi