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2023 Fiscal Year Research-status Report

Exploring the functionality of Al-catalyzed Si nanowires

Research Project

Project/Area Number 22K04885
Research InstitutionNational Institute for Materials Science

Principal Investigator

J. Wipakorn  国立研究開発法人物質・材料研究機構, ナノアーキテクトニクス材料研究センター, 主任研究員 (40748216)

Project Period (FY) 2022-04-01 – 2025-03-31
KeywordsNanowire / Nanostructure / Vapor-liquid-solid / CVD / Aluminum / Silicon
Outline of Annual Research Achievements

Al-catalyzed Si nanowires (NWs) formed by vapor-liquid-solid growth for high mobility field-effect transistor (HEMT) and photovoltaic cell applications were continuously investigated.
The vertically aligned Al-catalyzed SiNWs with smooth surfaces and single crystalline properties while addressing the issue of metal catalyst contamination have successfully proven the notable advantage of Si/Ge heteroarchitectures in their ability to enhance hole gas accumulation through bandgap engineering design. Various p-Si/i-Ge core-shell heterostructures with the addition of intermediate or/and outermost B-doped p+-Si shell were investigated to maximize hole gas accumulation in the Ge channel layer, with a focus on monitoring their core-shell structures, interfaces, and crystalline properties.
Exploring the physical and optical properties of nanodots at both room and low temperatures for photovoltaic applications has contributed to a deeper understanding of functionalization techniques aimed at enhancing SiNW-based solar cells.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The studies on exploring the functionality of Al-catalyzed SiNWs were well-progressed as explained in the research achievement part. The experiments on sample preparations and characterizations could smoothly proceed following the research plan. The laboratory consumables and facilities could be provided without any trouble.

Strategy for Future Research Activity

In this fiscal year, the experimental results will be continuously presented. More manuscripts will be submitted for publication. Extended investigation on Al-catalyzed SiNW size and position controls including the interface passivation for double-hetero Si/Ge core-shell NW structures and their effects on hole-gas accumulation will be elucidated. Various nanodots for photovoltaic applications will be observed in their physical and optical properties to enhance Al-catalyzed SiNW-based solar cells.

  • Research Products

    (6 results)

All 2023

All Journal Article (1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Paper-Thin Al-Catalyzed Si Nanowire Solar Cells and Efficiency Enhancement by Hybrid Nanostructures with Mn-Doped Perovskite Nanocrystals2023

    • Author(s)
      Jevasuwan Wipakorn、Abdelbar Mostafa、Jeco-Espaldon Bernice Mae Yu、Abdelhameed Mohammed、Sodabanlu Hassanet、Zhang Qinqiang、Okada Yoshitaka、Fukata Naoki
    • Journal Title

      ACS Applied Energy Materials

      Volume: 6 Pages: 7169~7179

    • DOI

      10.1021/acsaem.3c00888

  • [Presentation] Hybrid nanostructures of Al-catalyzed Si nanowires and CsPb0.81Mn0.19Cl3 perovskite nanocrystals for efficiency enhancement of thin photovoltaic cells2023

    • Author(s)
      Wipakorn Jevasuwan, Mostafa Fathalla Abdelmoghny Abdelbar, Bernice Mae Espaldon, Mohammed Abdelhameed, Hassanet Sodabanlu, Qinqiang Zhang, Yoshitaka Okada, Naoki Fukata
    • Organizer
      2023 International Conference on Solid State Devices and Materials (SSDM2023)
    • Int'l Joint Research
  • [Presentation] Al-Catalyzed SiNW-based Si/Ge Core-Shell Heteroarchitectures and Hole Gas Accumulation Enhancement for Transistor Applications2023

    • Author(s)
      Wipakorn Jevasuwan, Naoki Fukata
    • Organizer
      The 84th JSAP Autumn Meeting 2023
  • [Presentation] Thin Hybrid Nanostructure Solar cells of Al-Catalyzed Si Nanowires and Mn-doped Perovskite CsPbCl3 Nanocrystals2023

    • Author(s)
      Wipakorn Jevasuwan, Naoki Fukata
    • Organizer
      Nanowire Week 2023
    • Int'l Joint Research
  • [Presentation] Effective photon harvesting and energy transfers of Al-catalyzed Si nanowires and perovskite nanocrystals for thin photovoltaic cells2023

    • Author(s)
      Wipakorn Jevasuwan, Naoki Fukata
    • Organizer
      36th International Microprocesses and Nanotechnology Conference (MNC 2023)
    • Int'l Joint Research
  • [Presentation] Monitoring on Hole Gas Accumulation, Interfacial and Crystalline Properties of Al-Catalyzed SiNW/Ge Core-Multishell Heterostructures2023

    • Author(s)
      Wipakorn Jevasuwan, Naoki Fukata
    • Organizer
      The 71st JSAP Spring Meeting 2024

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Published: 2024-12-25  

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