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Study on corundum-structured ultra-wide band gap oxides with p-type conductivity

Research Project

Project/Area Number 18H01870
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 29020:Thin film/surface and interfacial physical properties-related
Research InstitutionKyoto University

Principal Investigator

Kaneko Kentaro  京都大学, 工学研究科, 講師 (50643061)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywordsp型酸化物 / 超ワイドギャップ / 酸化イリジウム / コランダム / 新規半導体 / 混晶 / ミストCVD / 酸化ガリウム / 準安定相 / コランダム構造 / 超ワイドバンドギャップ / 半導体
Outline of Final Research Achievements

The purpose of this research is to develop a new semiconductor that exhibits excellent energy-saving characteristics and low environmental load performance, to manufacture the ultimate energy-saving device, and to study its unknown physical properties. As one of the candidate materials, I focused on a new p-type oxide semiconductor of iridium oxide. This material is very difficult to synthesize, but fabrication method of high-quality thin films was established by this research budget. Then, when a device was manufactured using gallium oxide, a semiconductor that exhibits excellent energy-saving performance, as the n-type layer, it showed excellent rectification characteristics.

Academic Significance and Societal Importance of the Research Achievements

省エネルギー・低環境負荷な持続可能社会の実現のためには、これまで無駄に放出されていたエネルギーを低減する事が重要です。電気自動車やPC、発電所や変電所では電圧や電流を変化させる際に熱や光が無駄なエネルギーとして放出されます。本研究は、この電力の無駄を極限まで低減させる新しい材料として酸化イリジウムに注目し、その作製手法の確立と電力変換素子の作製に成功しました。今研究で開発に成功した素子を応用する事で、社会全体で消費される電力を大幅に低減させる事が可能となります。また、新素材による新しい学術領域の開拓が期待できます。

Report

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

    (9 results)

All 2021 2020 2019 2018

All Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Presentation] 準安定相および非平衡系材料の合成と新規機能開拓2021

    • Author(s)
      金子 健太郎,藤田 静雄
    • Organizer
      第68回 応用物理学会 春季学術講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] P-type α-(Ir,Ga)2O3 with a band gap of more than 4 eV2020

    • Author(s)
      Kentaro Kaneko, Yasuhisa Masuda, Shin-ichi Kan, Isao Takahashi, Yuji Kato, Ryohei Kanno, Masahiro Sugimoto, Takashi Shinohe, and Shizuo Fujita
    • Organizer
      第39回電子材料シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] バンドギャップ4 eV以上のp型α-(Ir,Ga)2O3の作製2020

    • Author(s)
      金子健太郎,増田泰久 ,高橋勲,菅野亮平, 四戸孝,藤田静雄
    • Organizer
      第81回 応用物理学会 秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] P-type Semiconductor Oxides in Gallium Oxide Electronics2019

    • Author(s)
      Kentaro Kaneko, Shin-ichi Kan,Takashi Shinohe, and Shizuo Fujita
    • Organizer
      Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] P-type α-(Ir,Ga)2O3 thin films in Gallium Oxide Electronics2019

    • Author(s)
      Kentaro Kaneko, Takashi Shinohe, and Shizuo Fujita
    • Organizer
      13th Topical Workshop on Heterostructure Microelectronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] α-Ga2O3のデバイス実用化とp型層の魅力2019

    • Author(s)
      金子健太郎、四戸孝、藤田静雄
    • Organizer
      日本結晶成長学会ナノエピ分科会 第11回ナノ構造・エピタキシャル成長講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 酸化ガリウムおよびそのp型層となる材料の開拓2019

    • Author(s)
      金子健太郎、藤田静雄
    • Organizer
      エレクトロニクス実装学会 部品内蔵技術研究委員会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 酸化ガリウムエレクトロニクスにおける p型作製の手法2019

    • Author(s)
      金子健太郎、藤田静雄
    • Organizer
      エレクトロニクス実装学会 パワーエレクトロニクス研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Novel P-type Oxide Semiconductors of α-Ir2O3 in Gallium Oxide Electronics2018

    • Author(s)
      Kentaro Kaneko, Shin-ichi Kan, Shu Takemoto, Isao Takahashi, Masahiro Sugimoto, Takashi Shinohe, and Shizuo Fujita
    • Organizer
      Material Research Society Fall Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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