Development of an organic monolayer Mott transistor

• Project/Area Number: 25810143
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Device related chemistry
• Research Institution: Institute for Molecular Science
• Principal Investigator: SUDA Masayuki 分子科学研究所, 協奏分子システム研究センター, 助教 (80585159)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 電界効果トランジスタ / 自己組織化単分子膜 / モット絶縁体 / 電荷移動錯体 / モット転移 / 有機電荷移動錯体

Outline of Final Research Achievements

In this research, an organic monolayer Mott field-effect transistor has been designed by fabricating the mixed self-assembled monolayer of TCNQ (Tetracyanoquinodimethane) and BEDT-TTF(Bis(ethylenedithio)tetrathiafulvalene) derivatives. The device obtained has a large single-domain monolayer in the range of 200 μm and showed n-type field effects. The observed ON/OFF ratio and field-effect mobility was higher than that of the FETs with bulk crystals, that demonstrated the superiority of the monolayer FET.

Research Products

• [Journal Article] Light-Induced Superconductivity Using a Photoactive Electric Double Layer (2015)
  • Author(s): M. Suda, R. Kato, and H. M. Yamamoto
  • Journal Title: Science Volume: 347 Issue: 6223 Pages: 743-746
  • DOI: 10.1126/science.1256783
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Strain-Tunable Superconducting Field-Effect Transistor with an Organic Strongly-Correlated Electron System (2014)
  • Author(s): M. Suda, Y. Kawasugi, T. Minari, K. Tsukagoshi, R. Kato, and H. M. Yamamoto
  • Journal Title: Advanced Materials Volume: 26 Issue: 21 Pages: 3490-3495
  • DOI: 10.1002/adma.201305797
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] フォトクロミズムを利用した分子性導体への 光キャリアドーピング (2015)
  • Author(s): 須田理行、加藤礼三、山本浩史
  • Organizer: 日本化学会第95春季年会
  • Place of Presentation: 日本大学（船橋、千葉）
  • Year and Date: 2015-03-26 – 2015-03-29
• [Presentation] 光誘起電気二重層を利用したκ型ET塩への静電キャリアドーピング (2015)
  • Author(s): 須田理行、加藤礼三、山本浩史
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学（早稲田、東京）
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 光応答性電気二重層を利用した κ-(BEDT-TTF)2Cu[N(CN)2]Brにおける光誘起超伝導転移 (2014)
  • Author(s): 須田理行、加藤礼三、山本浩史
  • Organizer: 第8回分子科学討論会
  • Place of Presentation: 広島大学（東広島、広島）
  • Year and Date: 2014-09-21 – 2014-09-24
• [Presentation] 光応答性電気二重層を利用した有機超伝導トランジスタ (2014)
  • Author(s): 須田理行、加藤礼三、山本浩史
  • Organizer: 第75回応用物理学会秋季学術講演会
  • Place of Presentation: 北海道大学（札幌、北海道）
  • Year and Date: 2014-09-17
• [Presentation] フォトクロミズムを利用した分子性導体薄片単結晶への光キャリアドーピングと光誘起超伝導転移 (2014)
  • Author(s): 須田理行、加藤礼三、山本浩史
  • Organizer: 第23回有機結晶シンポジウム
  • Place of Presentation: 東邦大学（習志野、千葉）
  • Year and Date: 2014-09-14 – 2014-09-17
• [Presentation] Continuous Observation of Light-induced Superconductivity utilizing a photo-active electric double layer (2014)
  • Author(s): Masayuki Suda, Reizo Kato, Hiroshi M. Yamamoto
  • Organizer: Gordon Research Conference - Current Meeting 2014 Conductivity & Magnetism in Molecular Materials
  • Place of Presentation: Lewiston, U.S.
  • Year and Date: 2014-08-02 – 2014-08-09
• [Presentation] Photo-gated Organic Superconducting Transistor utilizing a Photo-induced Electric-double-layer (2014)
  • Author(s): Masayuki Suda, Reizo Kato, Hiroshi M. Yamamoto
  • Organizer: International Conference on Synthetic Metals 2014
  • Place of Presentation: Turuku, Finland
  • Year and Date: 2014-06-30 – 2014-07-05
• [Remarks] 光でオン・オフ可能な超伝導スイッチを開発（プレスリリース）
  • URL: https://www.ims.ac.jp/news/2015/02/13_3096.html