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Atomic layer etching of transition metal chalcogenide with gas cluster ion beam

Research Project

Project/Area Number 17K05061
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionUniversity of Hyogo

Principal Investigator

Toyoda Noriaki  兵庫県立大学, 工学研究科, 准教授 (00382276)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsガスクラスターイオンビーム / 遷移金属カルコゲナイド / 原子層エッチング / MoS2 / XPS / 超薄膜
Outline of Final Research Achievements

MoS2 is a two-dimensional layered material, and it has been attracting attention as a next-generation electronic material. On the other hand, it is difficult to form a mono-layer MoS2. In this study, the etching and layer number control of MoS2, is performed by using a gas-cluster ion beam for the first time. From the X-ray photo-electron spectroscopy in a vacuum condition, it was found that GCIB irradiation produced MoOx on the surface at room temperature. Since MoOx is volatile, this layer can be removed easily. From AFM observation of MoS2 flake, it was found the possibility of etching MoS2 at the atomic layer level with GCIB.

Academic Significance and Societal Importance of the Research Achievements

MoS2に代表される遷移金属カルコゲナイド膜は、グラフェンにないバンドギャップを有するため、次世代の半導体材料として期待されているが、グラフェン同様、その成膜・加工技術に問題を抱えている。本研究によってMoS2膜のエッチングや層数制御の形成の可能が見いだされ、原子層トランジスタなど産業応用への広がりも期待できる。また学術的にも、これまでガスクラスタービームによるMoS2エッチングメカニズムは明らかにされておらず、独創的かつ学術的に意義ある研究である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (25 results)

All 2020 2019 2018 2017

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results) Presentation (17 results) (of which Int'l Joint Research: 11 results,  Invited: 5 results)

  • [Journal Article] Atomic layer etching by gas cluster ion beams with acetylacetone2019

    • Author(s)
      N. Toyoda, K. Uematsu
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SE Pages: SEEA01-SEEA01

    • DOI

      10.7567/1347-4065/ab17c5

    • NAID

      210000156295

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cluster beams, nano-ripples, and bio Applications2019

    • Author(s)
      N. Toyoda, B. Tilakaratne, I. Saleem, W-K. Chu
    • Journal Title

      Appl. Phys. Rev.

      Volume: 6 Issue: 2 Pages: 020901-020901

    • DOI

      10.1063/1.5030500

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Surface Planarization with Gas Cluster Ion Beams and Application to Wide-Bandgap Semiconductors2018

    • Author(s)
      Noriaki Toyoda
    • Journal Title

      International Journal of Automation Technology

      Volume: 12 Issue: 2 Pages: 170-174

    • DOI

      10.20965/ijat.2018.p0170

    • NAID

      130007505896

    • ISSN
      1881-7629, 1883-8022
    • Year and Date
      2018-03-05
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Irradiation conditions of gas cluster ion beam for surface-activated bonding2018

    • Author(s)
      Noriaki Toyoda, Tomoya Sasaki, Shota Ikeda, Isao Yamada
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 57 Issue: 2S1 Pages: 02BA02-02BA02

    • DOI

      10.7567/jjap.57.02ba02

    • NAID

      210000148617

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ultra-low loss ridge waveguides on lithium niobate via argon ion milling and gas clustered ion beam smoothening2018

    • Author(s)
      Shawn Yohanes Siew, Eric Jun Hao Cheung, Haidong Liang, Andrew Bettiol, Noriaki Toyoda, Bandar Alshehri, Elhadj Dogheche, and Aaron J. Danner
    • Journal Title

      Optics express

      Volume: 26 Issue: 4 Pages: 4421-4430

    • DOI

      10.1364/oe.26.004421

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atomic layer etching of Cu film using gas cluster ion beam2017

    • Author(s)
      Noriaki Toyoda and Akihiro Ogawa
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 50 Issue: 18 Pages: 184003-184003

    • DOI

      10.1088/1361-6463/aa6527

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Gas cluster ion beam irradiation for wafer bonding2017

    • Author(s)
      Noriaki Toyoda, Tomoya Sasaki, Shota Ikeda, Isao Yamada
    • Journal Title

      Proceedings of 5th Int. Workshop on Low Temperature Bonding for 3D Integration

      Volume: - Pages: 5-5

    • DOI

      10.23919/ltb-3d.2017.7947401

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optimization of GCIB irradiation conditions for surface activated bonding Proceedings of 5th Int. Workshop on Low Temperature Bonding for 3D Integration2017

    • Author(s)
      Shota Ikeda, Tomoya Sasaki, Noriaki Toyoda
    • Journal Title

      Proceedings of 5th Int. Workshop on Low Temperature Bonding for 3D Integration

      Volume: - Pages: 66-66

    • DOI

      10.23919/ltb-3d.2017.7947462

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] hfac吸着表面へのGCIB照射によるNiの原子層エッチング2020

    • Author(s)
      植松 功多, 豊田 紀章
    • Organizer
      2020年応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] GCIB照射を用いたMoS2の表面改質とエッチング(Ⅱ)2020

    • Author(s)
      劔持 将之, 豊田 紀章
    • Organizer
      2020年応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] クラスタービーム励起による表面反応と原子層エッチングへの応用2020

    • Author(s)
      豊田 紀章
    • Organizer
      日本表面真空学会 第12回関東支部セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] acac吸着表面へのAr-GCIB照射によるNiの原子層エッチング2019

    • Author(s)
      植松 功多, 豊田 紀章
    • Organizer
      2019年応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] GCIB照射を用いたMoS2の表面改質とエッチング2019

    • Author(s)
      劔持 将之, 豊田 紀章
    • Organizer
      2019年応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Atomic layer etching of transition metals with gas cluster ion beam irradiation and acetylacetone2019

    • Author(s)
      Noriaki Toyoda, Kota Uematsu
    • Organizer
      2019 Atomic Layer deposition & Atomic Layer Etching workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low temperature wafer bonding with gas cluster ion beams2019

    • Author(s)
      Noriaki Toyoda, Shota Ikeda
    • Organizer
      2019 6th International IEEE workshop on low temperature bonding for 3D integration
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of metal surface during atomic layer etching with gas cluster ion beam and organic acid2019

    • Author(s)
      Noriaki Toyoda, Kota Uematsu
    • Organizer
      America Vacuum Society 66th International Symposium & Exhibition
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ガスクラスターイオンビームによる原子層エッチング2018

    • Author(s)
      豊田 紀章
    • Organizer
      第79回応用物理学会秋季講演会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Atomic layer etching by gas cluster ion beams with acetylacetone2018

    • Author(s)
      Noriaki Toyoda
    • Organizer
      Dry process symposium (DPS) 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gas Cluster Ion Beam Etching under Organic Vapor for Atomic Layer Etching2018

    • Author(s)
      Noriaki Toyoda
    • Organizer
      America Vacuum Society (AVS) Fall symposium 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Precise polishing and figuring for optical manufacturing with gas cluster ion beam (GCIB)2018

    • Author(s)
      Noriaki Toyoda
    • Organizer
      International Symposium on Extreme Optical Manufacturing and Laser-Induced Damage in Optics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Gas cluster ion beam irradiation for wafer bonding2017

    • Author(s)
      Noriaki Toyoda, Tomoya Sasaki, Shota Ikeda, Isao Yamada
    • Organizer
      5th International Workshop on Low Temperature Bonding for 3D Integration (LTB-3D)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic layer etching with gas cluster ion beam irradiation in reactive gas vapor2017

    • Author(s)
      Noriaki Toyoda, Akihiro Ogawa, Isao Yamada
    • Organizer
      International conference on atomic layer deposition, Atomic layer etching workshop 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Atomic layer etching with gas cluster ion beams2017

    • Author(s)
      Noriaki Toyoda
    • Organizer
      23rd International conference on ion-surface interaction: ISI-2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Atomic layer etching with gas cluster ion beams2017

    • Author(s)
      Noriaki Toyoda, Akihiro Ogawa
    • Organizer
      International Conference on Advanced Materials 2017(IUMRS-ICAM2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Novel atomic layer etching using gas cluster ion beam irradiation2017

    • Author(s)
      Noriaki Toyoda
    • Organizer
      Material Research Society Fall Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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