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Control of Three-Dimensional Formation of Monolayer-Multilayer Graphene Films on Silicon Nanostructured Surfaces

Research Project

Project/Area Number 20K21135
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 28:Nano/micro science and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

FUKATA Naoki  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, MANA主任研究者 (90302207)

Co-Investigator(Kenkyū-buntansha) J. Wipakorn  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, 主任研究員 (40748216)
Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywordsグラフェン / シリコン / ナノワイヤ / 太陽電池
Outline of Research at the Start

グラフェンは、高移動度、高強度等の優れた特性を示すことから次世代デバイスの材料として様々な分野で注目されている。しかしながら、3次元構造を有する異種基板上に自由自在に形成することはできず、形成制御に大きな制限がある。もしも、如何なる形状の基板上にも形成できれば、その応用は格段に拡大するといえる。本研究では、通常は2次元平面にしか形成できていない多層グラフェン膜を3次元ナノ構造表面上に自在に形成する新しい方法論を開発する点が学術的に重要で挑戦的な点である。本技術を確立できれば、炭素原子膜の応用の幅を格段に広げられる。本研究では、1つの応用例として新規太陽電池セル開発に応用する。

Outline of Final Research Achievements

The formation process of multilayer graphene layers on Si nanowires was established. After an oxide film was formed on the surface of the Si nanowire, a thin Ni film acting as a growth catalyst of graphene was coated by sputtering. After the chemical vapor deposition (CVD) process using methane gas, the Ni thin film was removed by etching with nitric acid, and as a result of evaluation by transmission microscope (TEM) and Raman spectroscopy measurement, the three-dimensional formation of the multilayer graphene layer on the Si nanowire surface was verified. In addition, a multilayer graphene/Si nanowire Schottky type new structure solar cell using this structure was produced, and the photoelectric conversion characteristic was also succeeded.

Academic Significance and Societal Importance of the Research Achievements

グラフェンは、高移動度、高強度等の優れた特性を示すことから次世代デバイスの材料として注目されている。しかしながら、3次元構造を有する基板上に自由自在に形成することはできず、形成制御に大きな制限がある。如何なる形状の基板上にも形成できれば、その応用は格段に拡大するといえる。本研究では、グラフェン層を3次元ナノ構造表面上に自在に形成する手法を開発できており学術的に重要といえる。本技術を利用、応用できれば、炭素原子膜の応用の幅を広げ、太陽電池、トランジスタ等の様々なデバイスの高性能化、軽量化、フレキシブル化、透明化等の新たな機能発現を可能にする新技術に繋がるといえ、産業的にも重要な研究といえる。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (6 results) (of which Int'l Joint Research: 5 results,  Invited: 4 results) Book (1 results)

  • [Journal Article] Silicon nanowires covered with on-site fabricated nanowire-shape graphene for Schottky junction solar cells2021

    • Author(s)
      Wallace Steaphan M.、Jevasuwan Wipakorn、Fukata Naoki
    • Journal Title

      Solar Energy

      Volume: 224 Pages: 666-671

    • DOI

      10.1016/j.solener.2021.06.040

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Functionalized aluminum-catalyzed silicon nanowire formation and radial junction photovoltaic devices2021

    • Author(s)
      Jevasuwan Wipakorn、Fukata Naoki
    • Journal Title

      Nanoscale

      Volume: 13 Issue: 14 Pages: 6798-6808

    • DOI

      10.1039/d1nr00312g

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conversion of Amorphous Carbon on Silicon Nanostructures into Similar Shaped Semi-Crystalline Graphene Sheets2021

    • Author(s)
      Wallace Steaphan M.、Subramani Thiyagu、Jevasuwan Wipakorn、Fukata Naoki
    • Journal Title

      Journal of Nanoscience and Nanotechnology

      Volume: 21 Issue: 9 Pages: 4949-4954

    • DOI

      10.1166/jnn.2021.19329

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On-site growth method of 3D structured multi-layered graphene on silicon nanowires2020

    • Author(s)
      Wallace Steaphan Mark、Jevasuwan Wipakorn、Fukata Naoki
    • Journal Title

      Nanoscale Advances

      Volume: 2 Issue: 4 Pages: 1718-1725

    • DOI

      10.1039/d0na00098a

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Adjustable metal particle grid formed through upward directed solid-state dewetting using silicon nanowires2020

    • Author(s)
      Wallace Steaphan Mark、Jevasuwan Wipakorn、Fukata Naoki
    • Journal Title

      Nanoscale Advances

      Volume: 2 Issue: 12 Pages: 5607-5614

    • DOI

      10.1039/d0na00567c

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Al-Catalyzed Si Nanowire Formations on Thin Si Substrates and Photovoltaic Applications2021

    • Author(s)
      W. Jevasuwan, N. Fukata
    • Organizer
      The 31st International Conference on Defects in Semiconductors
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The On-Site Nanowire-Shape Graphene Formation for Silicon Nanowire-Based Schottky Junction Solar Cells2021

    • Author(s)
      Wipakorn Jevasuwan, Steaphan Wallace and Naoki Fukata
    • Organizer
      秋季第82回応用物理学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Solar Cells with combined function of Silicon and Perovskite Nanostructures2021

    • Author(s)
      Naoki Fukata
    • Organizer
      2021 Materials Research Society-Taiwan International Conference (2021 MRSTIC)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Solar Cells with combined function of Silicon and Perovskite Nanostructures2021

    • Author(s)
      Naoki Fukata
    • Organizer
      The 2021 Optics & Photonics Taiwan International Conference (OPTIC 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nanostructured Silicon Solar Cells2020

    • Author(s)
      Naoki Fukata
    • Organizer
      Tsukuba Global Science Week (TGSW2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Nanostructured Silicon Solar Cells2020

    • Author(s)
      Naoki Fukata
    • Organizer
      2020 NCHU-NIMS Workshop on Devices and Materials
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] In Fundamental Properties of Semiconductor Nanowires2021

    • Author(s)
      Naoki Fukata
    • Total Pages
      454
    • Publisher
      Springer Nature
    • ISBN
      9789811590498
    • Related Report
      2021 Annual Research Report

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Published: 2020-08-03   Modified: 2023-01-30  

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