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Basic study for application of narrow gap oxide semiconductors with zinc blende structure

Research Project

Project/Area Number 19K05008
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26020:Inorganic materials and properties-related
Research InstitutionNational Institute of Technology, Toyama College

Principal Investigator

Kita Masao  富山高等専門学校, その他部局等, 准教授 (00413758)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords酸化物半導体 / 閃亜鉛鉱型関連構造 / ナローバンドギャップ / ミストCVD / ナローギャップ / 閃亜鉛鉱構造
Outline of Research at the Start

Cu3VO4は酸化物としては希少な物性である,立方晶ダイヤモンド(閃亜鉛鉱)型関連構造と近赤外領域のバンドギャップ(1.14 eV)を有している.本課題では,ミストCVD法によるCu3VO4薄膜の作製方法を確立し,ドーピングによりp型とn型の伝導性を発現させ電気的な基礎物性を明らかにするとともに,Cu3VO4のpnホモ接合,Cu3VO4/ZnOヘテロ接合の形成と解析によって,ナローギャップ酸化物半導体のデバイス化の基礎知見を構築することを目的とする.

Outline of Final Research Achievements

Using an energy-saving and low-cost mist CVD method, which is a non-vaccum process, we succeeded in depositing Cu3VO4 thin films with a zinc blende (cubic diamond)-related structure, which is rare in oxides. Hall effect measurements confirmed p-type conduction in the non-doped Cu3VO4 thin film. The band gap of the Cu3VO4 thin film estimated from the optical absorption spectrum is 1.2 eV, which is suitable as a light-absorbing layer for single-junction solar cells.

Academic Significance and Societal Importance of the Research Achievements

バンドギャップが太陽電池材料に適していない材料が多い酸化物半導体は,これまで太陽電池の光吸収層としてあまり利用されてこなかった.本研究課題では,Cu3VO4の電気的・光学的性質を明らかにし,Cu3VO4が太陽電池材料として有望な材料であることを明らかにした.本研究の成果によって化学的安定性の高い酸化半導体がワイドギャップな領域だけでなく可視・赤外領域でも有用であることを検証できたことは、学術的にも社会的にも大きな意義がある.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (22 results)

All 2023 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Phase Transformation of Metastable Cu2ZnGeO4 with a Wurtz-Kesterite Structure at Elevated Temperatures2022

    • Author(s)
      Kita Masao, Suzuki Issei, Wada Noriyuki, Omata Takahisa
    • Journal Title

      Inorganic Chemistry

      Volume: 61 Issue: 35 Pages: 13700-13707

    • DOI

      10.1021/acs.inorgchem.2c00480

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Growth of β-NaGaO2 thin films using ultrasonic spray pyrolysis2022

    • Author(s)
      Suzuki Issei、Suzuki Shunichi、Watanabe Tatsuya、Kita Masao、Omata Takahisa
    • Journal Title

      Journal of Asian Ceramic Societies

      Volume: 10 Issue: 2 Pages: 520-529

    • DOI

      10.1080/21870764.2022.2082049

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced Valley Splitting of Exciton Emission in Colloidal PbSe Quantum Dots When the Interdot Distance Coincides with Onset of Forster Resonance Energy Transfer2021

    • Author(s)
      Omata Takahisa、Asano Hiroshi、Sakai Masahiro、Terai Yoshikazu、Kita Masao
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 12 Pages: 3120-3126

    • DOI

      10.1021/acs.jpclett.1c00165

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] White-light emission from zinc chalcogenide alloy quantum dots with gradient compositions2021

    • Author(s)
      Omata Takahisa、Asano Hiroshi、Tsukuda Satoshi、Kita Masao
    • Journal Title

      Journal of Luminescence

      Volume: 232 Pages: 117876-117876

    • DOI

      10.1016/j.jlumin.2020.117876

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Zn(Te1-xSex ) quantum dots synthesized through a facile route and their band-edge and surface state driven visible-light emission2021

    • Author(s)
      Tsukuda Satoshi、Kita Masao、Omata Takahisa
    • Journal Title

      Journal of Luminescence

      Volume: 231 Pages: 117829-117829

    • DOI

      10.1016/j.jlumin.2020.117829

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Formation of Spherical, Rod- and Branch-Shaped Colloidal In<sub>2</sub>O<sub>3</sub> Nanocrystals through Simple Thermolysis of an Oleate Precursor2020

    • Author(s)
      Tsukuda Satoshi、Uesugi Hideo、Kita Masao、Omata Takahisa
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 61 Issue: 3 Pages: 462-468

    • DOI

      10.2320/matertrans.MT-M2019245

    • NAID

      130007801635

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2020-03-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] ミストCVD法によるCu3VO4薄膜形成における添加物の影響と表面形態観察2023

    • Author(s)
      喜多 正雄,田中 尚旺
    • Organizer
      日本セラミックス協会 2023 年年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜の形成および表面形態観察2022

    • Author(s)
      喜多 正雄,井内 陽介
    • Organizer
      日本セラミックス協会北陸支部秋季研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Surface morphology of Cu3VO4 thin film fabricated by mist CVD method2022

    • Author(s)
      Nao Tanaka, Makoto Inoue, Tomoyuki Homma, and Masao Kita
    • Organizer
      The 7th International Conference on "Science of Technology Innovation" 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜形成条件の検討2022

    • Author(s)
      喜多 正雄,井内 陽介
    • Organizer
      日本セラミックス協会.第35回秋季シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] ウルツ鉱型関連構造のナローギャップ酸化物半導体Cu2ZnGeO4の高温における相転移2021

    • Author(s)
      喜多 正雄, 和田 憲幸, 鈴木 一誓,小俣 孝久
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Effect of additives on the formation of Cu3VO4 thin film by mist CVD method2021

    • Author(s)
      Yosuke IUCHI, Makoto INOUE, Tomoyuki HONMA, Masao KITA
    • Organizer
      6th STI-Gigaku2021
    • Related Report
      2021 Research-status Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜の形成における添加物の効果2021

    • Author(s)
      井内陽介,喜多正雄
    • Organizer
      第23回日本セラミックス協会北陸支部秋季研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜の合成条件の検討2020

    • Author(s)
      喜多正雄,大門貴寛
    • Organizer
      日本セラミックス協会 2020 年年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Investigation of the synthesis conditions of Cu3VO4 thin film by mist CVD method2020

    • Author(s)
      Taichi Nogami1, Makoto Inoue, Tomoyuki Homma, and Masao Kita
    • Organizer
      5th STI-Gigaku2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Investigation of cation exchange method by stirring in long-chain alcohol2020

    • Author(s)
      Yuuki Oho, Tomoyuki Homma, and Masao Kita
    • Organizer
      5th STI-Gigaku2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ミストCVD法によるCu3VO4薄膜の合成条件の検討2020

    • Author(s)
      野上大一,喜多正雄
    • Organizer
      第23回日本セラミックス協会北陸支部秋季研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜の形成2020

    • Author(s)
      喜多正雄,大門貴寛,野上大一
    • Organizer
      第23回日本セラミックス協会北陸支部秋季研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] ミストCVD法によるCu3VO4薄膜の形成における溶媒の影響2020

    • Author(s)
      喜多 正雄・大門 貴寛
    • Organizer
      日本セラミックス協会2020年年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Phase transformations of the narrow gap oxide semiconductor Cu2ZnGeO4 with wurtzite-derived structure in Ar atmosphere2019

    • Author(s)
      KITA, Masao , SUZUKI, Issei, WADA, Noriyuki, OMATA, Takahisa
    • Organizer
      The 13th Pacific Rim Conference of Ceramic Societies
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fabrication of Cu3VO4 thin films by Mist CVD method2019

    • Author(s)
      Takahiro Daimon, Makoto Inoue, Tomoyuki Homma, and Masao Kita
    • Organizer
      4th STI-Gigaku2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ミストCVD法によるCu3VO4薄膜の合成における溶媒の検討2019

    • Author(s)
      大門貴寛,喜多正雄
    • Organizer
      第22回日本セラミックス協会北陸支部秋季研究発表会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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