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The study of surface liquid phase epitaxy for the fabrication of silicon nano-structures

Research Project

Project/Area Number 18K14129
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionSuzuka National College of Technology

Principal Investigator

Nishimura Takashi  鈴鹿工業高等専門学校, その他部局等, 准教授 (10757248)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords表面融液エピタキシャル結晶成長 / シリサイド微小結晶 / 表面結晶アレイ / 表面融液 / 液相エピタキシャル結晶成長 / シリコン / 準溶融状態 / 液相エピタキシャル成長 / 鉄シリサイド / 半導体微細加工法 / 溶融凝固 / エレクトロマイグレーション / 表面微細パターニング
Outline of Final Research Achievements

Silicon (Si) protrusions with iron (Fe) silicide were fabricated using only the process of surface melting and solidifying. Si pieces with Fe deposition were heated at 1250 °C under a tensile stress of about 2 GPa. The surface tensile stress increased the non-uniform surface temperature distribution and the surface melted layers formed in the higher temperature area. This Si surface melting took place in the temperature below the melting point of 1414 °C for bulk of Si. Melted Si layers and Fe atoms in the higher temperature area flowed to the lower temperature area along the current direction via electromigration. When the Si piece was cooled down, the accumulated Si atoms with Fe atoms formed the protrusion with caps and internal precipitates of Fe silicide by the epitaxial growth. The size and position of the caps and the internal precipitates depended on the amount of Fe deposition and surface crystal orientation.

Academic Significance and Societal Importance of the Research Achievements

本研究ではシリサイド微小結晶を半導体シリコン表面へ形成する新技術の開発を行った.近年,シリサイドはその特徴的な光学的・電気的特性により,LEDなどの光デバイスやフィールドエミッタアレイなどの表面デバイス,CMOSゲート材などに広く応用されている.しかし製造プロセスにおいてSiとシリサイドの界面歪みを緩和するために800 ℃程度の高温加熱が必要であるために,Siプロセスを応用してシリサイドの複雑な微小結晶体を形成するのは困難であった.本研究で開発した溶融‐凝固プロセスを応用したシリサイド微小結晶アレイ構造を形成する新手法により,新規デバイス構造の開発を期待できる.

Report

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

    (5 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] Microanalysis of silicon protrusions with a titanium cap formed via surface melting and solidification under applied tensile stress2019

    • Author(s)
      Takashi Nishimura1 and Masahiko Tomitori
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 8 Issue: 2 Pages: 025501-1

    • DOI

      10.7567/1347-4065/aaf46c

    • NAID

      210000135275

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Formation of Silicon Protrusions via Surface Melting and Solidification Under Applied Tensile Stress2018

    • Author(s)
      T.Nishimura
    • Journal Title

      ANNUAL REPORT OF THE MURATA SCIENCE FOUNDATION

      Volume: 33 Pages: 412-418

    • Related Report
      2018 Research-status Report
  • [Presentation] 応力印加場での局所表面融液エピタキシャル結晶成長による突起構造形成過程の熱画像解析2020

    • Author(s)
      西村 高志,磯部 文哉,富取 正彦
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 局所応力印加下での金属蒸着表面液相エピタキシャル成長による突起構造形成2019

    • Author(s)
      西村高志, 富取正彦
    • Organizer
      2019年日本表面真空学会学術講演
    • Related Report
      2019 Annual Research Report
  • [Presentation] 局所応力印加下での表面液相エピタキシャル成長で形成した表面突起構造の断面構造解析2018

    • Author(s)
      西村高志, 富取正彦
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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