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Demonstration of germanene field effect transistor and process development

Research Project

Project/Area Number 17H02788
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionOsaka University

Principal Investigator

Kubo Osamu  大阪大学, 工学研究科, 准教授 (70370301)

Co-Investigator(Kenkyū-buntansha) 田畑 博史  大阪大学, 工学研究科, 助教 (00462705)
中山 知信  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, 副拠点長 (30354343)
片山 光浩  大阪大学, 工学研究科, 教授 (70185817)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywordsゲルマネン / ゲルマナン / トランジスタ / 層状物質 / 電気伝導 / ショットキー障壁 / イオン散乱分光 / 光電子分光 / 界面伝導 / ナノ材料 / 表面・界面物性 / 電子・電気材料 / 走査プローブ顕微鏡 / 物性実験 / 層状材料 / イオン散乱 / 層状半導体 / 水素終端 / 走査トンネル顕微鏡 / 走査トンネル分光 / セレン化インジウム
Outline of Final Research Achievements

A six-membered ring structure of germanium (Ge), called geramanene, can be expected as a channel material for high-speed field-effect transistors (FETs). In the first half of the period, the structure of the Ge monolayer film formed on the Al(111) substrate was evaluated. It was found that the 3×3 periodic structure reported so far did not have a 6-membered ring structure, while a √7×√7 periodic structure newly discovered this time forms a six-membered ring structure. In the latter half of the period, we investigated the FET characteristics of hydrogen-terminated germanene (germanene) that can exist stably in the atmosphere, especially the type of electrode metal. The high resistance in the off state and the low resistance in the on state.

Academic Significance and Societal Importance of the Research Achievements

高移動度薄膜トランジスタは、ディスプレイやセンサー、フレキシブルデバイスなど様々な場面で要求されています。特に第14族元素のシート材料は、移動度や光電特性に優れた半導体であると予想されています。我々はまずGeの六員環シート・ゲルマネンの構造を調べ、これまでゲルマネンとされていた構造が六員環を形成しておらず、新たに発見したGeシート構造が六員環を形成していることを見出しました。また、実用に近い材料としてゲルマネンの両面が水素で覆われた「ゲルマナン」のトランジスタを作製する際に、Niを電極とするとよい特性が得られることを見出しました。これらはGeシートのデバイス応用に向けた重要な一歩と言えます。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (34 results)

All 2021 2020 2019 2018 2017

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (27 results) (of which Int'l Joint Research: 8 results,  Invited: 2 results)

  • [Journal Article] Visible-Light-Activated Response Originating from Carrier-Mobility Modulation of NO2 Gas Sensors Based on MoS2 Monolayers2021

    • Author(s)
      Hiroshi Tabata, Hiroaki Matsuyama, Taishi Goto, Osamu Kubo, Mitsuhiro Katayama
    • Journal Title

      ACS Nano

      Volume: 15 Issue: 2 Pages: 2542-2553

    • DOI

      10.1021/acsnano.0c06996

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Segregation of metallic germanium atoms at the graphene/metal interface toward germanene growth2020

    • Author(s)
      Seiya Suzuki, K. Kanishka H. De Silva, Masamichi Yoshimura, Tomonobu Nakayama
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SN Pages: SN1004-SN1004

    • DOI

      10.35848/1347-4065/ab840c

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Raman intensity oscillation of graphene over SiO2/Si micro-cavity2020

    • Author(s)
      Q. Li , X. Zhang, D. Jiang, Y. Shingaya, D. Tsuya, T. Nakayama
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: 2 Pages: 028001-028001

    • DOI

      10.35848/1347-4065/ab67e0

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Associative routing through neuromorphic nanowire networks2020

    • Author(s)
      A. Diaz-Alvarez, R. Higuchi, Q. Li, Y. Shingaya, T. Nakayama
    • Journal Title

      AIP Advances

      Volume: 10 Issue: 2

    • DOI

      10.1063/1.5140579

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bias- and Gate-Tunable Gas Sensor Response Originating from Modulation in the Schottky Barrier Height of a Graphene/MoS2 van der Waals Heterojunction2018

    • Author(s)
      Hiroshi Tabata, Yuta Sato, Kouhei Oi, Osamu Kubo, Mitsuhiro Katayama
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 10 Issue: 44 Pages: 38387-38393

    • DOI

      10.1021/acsami.8b14667

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] √3x√3 germanene on Al(111) grown at nearly room temperature2018

    • Author(s)
      Satoshi Endo, Osamu Kubo, Noriharu Nakashima, Seiya Iwaguma, Riku Yamamoto, Yoshinari Kamakura, Hiroshi Tabata, Mitsuhiro Katayama
    • Journal Title

      Applied Physics Express

      Volume: 11 Issue: 1 Pages: 015502-015502

    • DOI

      10.7567/apex.11.015502

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Analysis of Self-Assembled Platinum-Silicide Nanostructures on Si(001) Using Ion Scattering Spectroscopy2018

    • Author(s)
      Hiroyuki Kagitani, Seijiro Kinoshita, Osamu Kubo, Kazuki Takahashi, Hiroshi Tabata, Mitsuhiro Katayama
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 16 Issue: 0 Pages: 66-71

    • DOI

      10.1380/ejssnt.2018.66

    • NAID

      130006655057

    • ISSN
      1348-0391
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] r面サファイア基板上にミストCVD法で作製したVO2薄膜の表面構造解析に関する研究2021

    • Author(s)
      前田 青輝、中山 瑛太、田畑 博史、久保 理、片山 光浩、木村 信、股村 雄也、池之上 卓己
    • Organizer
      第61回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光活性化されたMoS2ガスセンサのNO2に対する移動度変調応答2020

    • Author(s)
      田畑 博史、松山 弘明、後藤 大志、雛本 樹生、杉本 泰、久保 理、藤井 稔、片山 光浩
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 単層MoS2ガスセンサの可視光照射下での応答活性化2020

    • Author(s)
      後藤 大志、松山 弘明、田畑 博史、久保 理、片山 光浩
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ファンデルワールス材料/Ag(111)界面へのゲルマネン析出合成2020

    • Author(s)
      鈴木 誠也、岩崎 拓哉、 K. Kanishka、H. De Silva、末原 茂、渡邊 賢司、谷口 尚、森山 悟士、吉村 雅満、相澤 俊、中山 知信
    • Organizer
      2020年日本表面真空学会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] R面サファイア上にミストCVDで作製したα-Ga2O3薄膜の表面構造解析2020

    • Author(s)
      久保 理, 丹波 大樹, 尾坂 駿, 織田 真也, 田畑 博史, 片山 光浩
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FET特性に向けた大面積ゲルマナン薄膜の堆積法の検討2019

    • Author(s)
      古沢 侑也、山本 陸、久保 理、田畑 博史、片山 光浩
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 金援用剥離法による大面積ゲルマナン薄膜の作製2019

    • Author(s)
      古沢 侑也、山本 陸、久保 理、田畑 博史、片山 光浩
    • Organizer
      応用物理学会関西支部2019年度第1回講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] グラフェン/Siヘテロ構造光起電力型ガスセンサのガス応答特性の改善2019

    • Author(s)
      杉山 裕一、田畑 博史、久保 理、片山 光浩
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 単層MoS2ガスセンサの可視光照射下での応答活性化2019

    • Author(s)
      松山 弘明、田畑 博史、久保 理、片山 光浩
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 単層 MoS2の光活性化ガス応答の評価2019

    • Author(s)
      田畑 博史、松山 弘明、久保 理、片山 光浩
    • Organizer
      2019年日本表面真空学会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ion Scattering Spectroscopy of α-Ga2O3 Grown on r-plane Sapphire by Mist Chemical Vapor Deposition2019

    • Author(s)
      O. Kubo, D. Tamba, S. Osaka, M. Oda, H. Tabata and M. Katayama
    • Organizer
      32th International Microprocesses and Nanotechnology Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Al(111)3×3超周期ゲルマネンの角度分解光電子分光計測2019

    • Author(s)
      久保 理、木下 盛治朗、佐藤 仁、宮本 幸治、遠藤 聡、菅原 隆志、田畑 博史、奥田 太一、片山 光浩
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Al(111)√7×√7周期ゲルマネンの電子バンド構造2018

    • Author(s)
      久保 理、遠藤 聡、佐藤 仁、宮本 幸治、木下 盛治郎、菅原 隆志、田畑 博史、奥田 太一、片山 光浩
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ボロフェンの低温電子物性測定2018

    • Author(s)
      新宮 勇、細川 晋平、遠藤 聡、田畑 博史、久保 理、片山 光浩
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electronic properties of silicene and germanene on metal substrates2018

    • Author(s)
      Osamu Kubo
    • Organizer
      ポストグラフェン材料のデバイス開発研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Multiple-probe STM measurements on nano materials and systems2018

    • Author(s)
      Tomonobu Nakayama
    • Organizer
      Workshop on Charge Transport with Multi-Tip STM Techniques
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of electronic band and atomic structure of germanene formed on Al(111)2018

    • Author(s)
      Osamu Kubo, Satoshi Endo, Hitoshi Sato, Koji Miyamoto, Seijiro Kinoshita, Ryuji Sugahara, Hiroshi Tabata, Taichi Okuda, Mitsuhiro Katayama
    • Organizer
      14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (ACSIN-14)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structural Analysis of Germanene on Al(111) by Ion Scattering Spectroscopy2018

    • Author(s)
      Seijiro Kinoshita, Osamu Kubo, Hiroyuki Kagitani, Ryuji Sugahara, Hiroshi Tabata and Mitsuhiro Katayama
    • Organizer
      31st International Microprocesses and Nanotechnology Conference (MNC 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of multiple-probe AFM combined with SEM for investigation of neuromorphic nanowire network system2018

    • Author(s)
      Yoshitaka Shingaya, Rintaro Higuchi, Ming Li, Qiao Li, Tomonobu Nakayama
    • Organizer
      31st International Microprocesses and Nanotechnology Conference (MNC 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低速イオン散乱分光法によるAl(111)ゲルマネンの構造解析2018

    • Author(s)
      菅原 隆志、木下 盛治朗、久保 理、鍵谷 浩行、田畑 博史、片山 光浩
    • Organizer
      2018年日本表面真空学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 走査トンネル顕微鏡によるボロフェンの低温電子物性測定2018

    • Author(s)
      細川 晋平、新宮 勇、遠藤 聡、田畑 博史、久保 理、片山 光浩
    • Organizer
      2018年日本表面真空学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] グラフェン/Siショットキーダイオードの光起電力ガス応答2018

    • Author(s)
      麻下卓嗣、田畑博史、久保理、片山光浩
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] イオン散乱分光法によるAl(111)上ゲルマネンの表面構造解析2018

    • Author(s)
      木下盛治朗、久保理、鍵谷浩行、菅原隆志、田畑博史、片山 光浩
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] セレン化インジウム表面の原子配列評価2017

    • Author(s)
      岩熊征也、山本陸、遠藤聡、新宮勇、田畑博史、久保理、片山光浩
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Structural Analysis of Pt2Si Nanowire Grown on Si(100)2017

    • Author(s)
      Seijiro Kinoshita, Hiroyuki Kagitani, Kazuki Takahashi, Hiroshi Tabata, Osamu kubo, Mitsuhiro Katayama
    • Organizer
      The 8th International Symposium on Surface Science
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Atomic and Electronic Structures of Germanene Formed on Al(111)2017

    • Author(s)
      Riku Yamamoto, Satoshi Endo, Seiya Iwaguma, Noriharu Nakashima, Hiroshi Tabata, Osamu Kubo, Mitsuhiro Katayama
    • Organizer
      The 8th International Symposium on Surface Science
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Scanning tunneling microscopy study of √3x√3 germanene on Al(111) grown at nearly room temperature2017

    • Author(s)
      Satoshi Endo, Osamu Kubo, Noriharu Nakashima, Hiroshi Tabata, Mitsuhiro Katayama
    • Organizer
      25th International Colloquium on Scanning Probe Microscopy
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2022-01-27  

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