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Formation of high-performance transparent conductive films by compounding metal and oxide nanomaterials for high efficiency photovoltaics

Research Project

Project/Area Number 17H04721
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Design and evaluation of sustainable and environmental conscious system
Research InstitutionTohoku University

Principal Investigator

Yokoyama Shun  東北大学, 環境科学研究科, 准教授 (30706809)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥21,450,000 (Direct Cost: ¥16,500,000、Indirect Cost: ¥4,950,000)
Fiscal Year 2018: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2017: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
KeywordsCuナノワイヤ / 酸化物 / 透明導電膜 / 太陽電池応用 / 低環境負荷プロセス / 表面改質 / 保護剤 / 耐久性 / 酸化物ナノ粒子 / 複合化 / 合成機構 / アスペクト比 / 低環境負荷合成 / 液相還元法 / アスコルビン酸 / 太陽電池
Outline of Final Research Achievements

We have examined to produce low cost, flexible and high-performance transparent conductive materials, replacing high cost, brittle and high-performance Indium tin oxide films for high efficiency photovoltaics. Although Cu nanowires (NWs) are promising materials, there are some problems about synthesis method, sizes and surfaces, and stability. In this study, we synthesize Cu NWs with controlled sizes based on an environmentally friendly synthesis method. In addition, the stability of the Cu NWs was improved by coating the Cu NW surfaces with metal oxide nanomaterials. The resultant Cu NW films achieved above 85% transmittance and below 100 Ω/□ sheet resistance.

Academic Significance and Societal Importance of the Research Achievements

エネルギー環境問題解決には、太陽電池が最重要技術の一つである。普及のためには、更なる高効率化と低コスト化が必要となる。電池構成部品である透明導電膜に着目すると、最も広く使用されているITOは、性能は高いが、高コストである等多くの課題が存在する。そこでITOよりも低コストかつ性能が高い透明導電膜を創出することによって、太陽電池の高効率化と低コスト化が望める。本研究では、その代替材料として、金属であるCuナノワイヤと酸化物の複合化によって、ITOを性能、価格ともに凌駕できる透明導電膜が形成できる可能性があることを示した。今後は、各ナノ材料の形状、表面、複合化を精密に制御し更なる性能向上を目指す。

Report

(3 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (8 results)

All 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Environmentally friendly synthesis and formation mechanism of copper nanowires with controlled aspect ratios from aqueous solution with ascorbic acid2018

    • Author(s)
      Yokoyama Shun、Motomiya Kenichi、Jeyadevan Balachandran、Tohji Kazuyuki
    • Journal Title

      Journal of Colloid and Interface Science

      Volume: 531 Pages: 109-118

    • DOI

      10.1016/j.jcis.2018.07.036

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aqueous electrophoretic deposition of citric-acid-stabilized copper nanoparticles2018

    • Author(s)
      Shun Yokoyama, Ippei Suzuki, Kenichi Motomiya, Hideyuki Takahashi, KazuyukiTohji
    • Journal Title

      Colloids and Surfaces A: Physicochemical and Engineering Aspects

      Volume: 545 Pages: 93-100

    • DOI

      10.1016/j.colsurfa.2018.02.056

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Synthesis of Cu nanowires using ascorbic acid in aqueous solution and their applications for flexible transparent conductive films2018

    • Author(s)
      Shun Yokoyama, Kenichi Motomiya, Balachandran Jeyadevan, and Kazuyuki Tohji
    • Organizer
      The Electrochemical Society AiMES2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エステル化反応を用いた金属ドープZnOナノ粒子の合成と透明導電膜への応用2018

    • Author(s)
      遠藤 拓也、横山 俊、本宮 憲一、高橋 英志、田路 和幸
    • Organizer
      資源・素材2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] アスコルビン酸水溶液におけるCuナノワイヤのアスペクト比制御2018

    • Author(s)
      及川 大輝、横山 俊、本宮 憲一、高橋 英志、田路 和幸
    • Organizer
      資源・素材2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Synthesis of Cu nanowires with high aspect rations using ascorbic acid in aqueous solution for high-performance transparent electrodes2017

    • Author(s)
      S. Yokoyama , K. Motomiya, B. Jeyadevan , K. Tohji
    • Organizer
      5th Nano Today Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrophoretic deposition of Cu NPs for fabricating conductive patterns in aqueous solution2017

    • Author(s)
      Shun Yokoyama, Ippei Suzuki, Tatsuichiro Nakamoto, Kenichi Motomiya, Kai Takayuki, Hideyuki Takahashi and Kazuyuki Tohji
    • Organizer
      9th International Conference on Materials for Advanced Technologies
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 銅ナノワイヤの製造方法2018

    • Inventor(s)
      横山俊、高橋英志、田路和幸、下位法弘、公文翔一
    • Industrial Property Rights Holder
      横山俊、高橋英志、田路和幸、下位法弘、公文翔一
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-154657
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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