Development of tunnel transistor with molecular superlattice

• Project/Area Number: 15K13819
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Device related chemistry
• Research Institution: National Institute for Materials Science
• Principal Investigator: Wakayama Yutaka 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, グループリーダー (00354332)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: トンネル現象 / 分子自己組織化膜 / 縦型トンネルトランジスタ / 自己組織化分子膜 / 縦型トランジスタ / 半導体デバイス / トンネルトランジスタ

Outline of Final Research Achievements

A main purpose of this study is to develop a vertical tunnel transistor. Key component of this device is binary molecular monolayers, which were incorporated in a double-tunneling junction to work as quantum dots for electron tunneling. An advantage of organic molecules is that energy levels of molecules can be tuned precisely by designing molecular structures. In fact, we observed multi-step tunneling in accordance with the energy levels of respective molecules. Furthermore, electron-tunneling can be modulated under side-gate bias voltages. Thus, vertically-aligned tunneling transistor with multi-value switching operation were successfully developed by using organic molecules.

Research Products

• [Int'l Joint Research] Donostia International Physics Center/Univeristy of Basque County(スペイン)
• [Journal Article] Photoelectron spectroscopic study on monolayer pentacene thin-film/polar ZnO single-crystal hybrid interface (2017)
  • Author(s): Takahiro Nagata, Tatsuru Nakamura, Ryoma Hayakawa, Takeshi Yoshimura, Seungjun Oh, Nobuya Hiroshiba, Toyohiro Chikyow, Norifumi Fujimura, Yutaka Wakayama
  • Journal Title: Applied Physics Express Volume: 10 Issue: 2 Pages: 0257021-4
  • DOI: 10.7567/apex.10.025702
  • NAID: 210000135772
  • Peer Reviewed
• [Journal Article] Carrier transport properties of MoS2 field-effect transistors produced by multi-step chemical vapor deposition method (2016)
  • Author(s): Sinae Heo, Ryoma Hayakawa, Yutaka Wakayama
  • Journal Title: Journal of Applied Physics Volume: 121 Issue: 2
  • DOI: 10.1063/1.4973491
  • Peer Reviewed
• [Journal Article] Overlapping of Frontier Orbitals in Well-Defined DNTT and Picene Monolayers (2016)
  • Author(s): Yuri Hasegawa, Yoichi Yamada, Takuya Hosokai, Yutaka Wakayama, Koswattage Rasika, Masahiro Yano and Masahiro Sasaki
  • Journal Title: J. Phys. Chem. C Volume: 120 Issue: 38 Pages: 21536-21542
  • DOI: 10.1021/acs.jpcc.6b06838
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Substrate-independent growth of atomically precise chiral graphene nanoribbons (2016)
  • Author(s): Dimas G. de Oteyza, Aran Garcia-Lekue, Manuel Vilas-Varela, Nestor Merino, Eduard Carbonell-Sanroma, Martina Corso, Guillaume Vasseur, Mikel Abadia, Celia Rogero, Dolores Perez, Enrique Guitian, J. Ignacio Pascual, J. Enrique Ortega, Yutaka Wakayama, Diego Pena
  • Journal Title: ACS Nano Volume: 10 Issue: 9 Pages: 9000-9008
  • DOI: 10.1021/acsnano.6b05269
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] On-surface molecular nanoarchitectonics: From self-assembly to directed-assembly (2016)
  • Author(s): Yutaka Wakayama
  • Journal Title: Japanese Journal of Applied Physics Volume: 55
  • NAID: 210000147202
  • Peer Reviewed
• [Presentation] 分子で操るトンネル電流 (2016)
  • Author(s): 若山 裕
  • Organizer: NIMS week
  • Place of Presentation: 東京都千代田区 東京フォーラム
  • Year and Date: 2016-10-20
• [Presentation] Interface Engineering for Molecule-Based Single-Electron Tunneling Dev ices (2016)
  • Author(s): Yutaka Wakayama, Ryoma Hayakawa, Kenji Higashiguchi, Kenji Matsuda
  • Organizer: International Conference on Electronic Materials
  • Place of Presentation: Suntec, Singapore
  • Year and Date: 2016-07-04
  • Int'l Joint Research
• [Presentation] Interface Engineering for Molecule-Based Single-Electron Tunneling Devices (2016)
  • Author(s): Yutaka Wakayama, Ryoma Hayakawa, Kenji Matsuda, Kenji Higashiguchi
  • Organizer: International Conference on Electronic Materials
  • Place of Presentation: Singapore
  • Year and Date: 2016-07-04
  • Int'l Joint Research
• [Presentation] Molecules meet Si: bridging single-molecular function with practical device (2015)
  • Author(s): Yutaka Wakayama
  • Organizer: 16th Trend in Nanotechnology International Conference
  • Place of Presentation: Toulouse, France
  • Year and Date: 2015-09-07
  • Int'l Joint Research / Invited
• [Presentation] Molecular Functions in Si-based tunneling devices (2015)
  • Author(s): Yutaka Wakayama
  • Organizer: Collaborative Conference on 3D and Materials Research 2015
  • Place of Presentation: 韓国釜山
  • Year and Date: 2015-06-15
  • Int'l Joint Research / Invited
• [Patent(Industrial Property Rights)] 半導体装置 (2016)
  • Inventor(s): 若山裕、小橋和義、早川竜馬、知京豊裕
  • Industrial Property Rights Holder: 国立研究開発法人物質・材料研究機構
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2016-167281
  • Filing Date: 2016-08-29