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Development of rare metal free high performance flexible oxide transistors and logic circuits

Research Project

Project/Area Number 16K06288
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionOsaka Research Institute of Industrial Science and Technology

Principal Investigator

SATOH Kazuo  地方独立行政法人大阪産業技術研究所, 和泉センター, 主幹研究員 (30315163)

Co-Investigator(Kenkyū-buntansha) 櫻井 芳昭  地方独立行政法人大阪産業技術研究所, その他部局等, 総括研究員 (50359387)
金岡 祐介  地方独立行政法人大阪産業技術研究所, その他部局等, 研究員 (60443537)
村上 修一  地方独立行政法人大阪産業技術研究所, その他部局等, 主幹研究員 (70359420)
Research Collaborator KAKEHI Yoshiharu  地方独立行政法人大阪産業技術研究所, 電子・機械システム研究部, 主任研究員 (90359406)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords酸化物薄膜 / フレキシブル / 薄膜トランジスタ / レアメタルフリー / 酸化物アモルファス半導体 / フレキシブルデバイス / ZTO / 熱処理 / 電子・電気材料 / 半導体物性 / TFT
Outline of Final Research Achievements

The purpose of this study is to fabricate Zn2SnO4 (ZTO) based high performance thin film transistors (TFTs) on flexible substrates for applying to display and biosensors. ZTO thin films have attracted much attention as a new channel material due to low cost and non-toxicity. In this study, it became clear that oxygen flow ratio during sputtering and gate insulator film thickness significantly affect the properties of ZTO based TFTs. In addition, the drain source current does not modulate with the gate voltage after the ZTO films are patterned by wet etching for fabricating TFTs. However, it is found that post annealing in air is effective in improving the electrical properties of the ZTO based TFTs. From these results, we have succeeded in fabricating ZTO based TFTs on polyimide film substrates and ultra-thin glass substrates. The electrical field effect mobility was more than 10 cm2/Vs. Furthermore, we have tried to make ZTO inverters and ring oscillators.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的成果は、ZTO材料を用いたTFTの特性に対し、成膜時の酸素流量比やゲート絶縁膜及びポストアニールが大きな影響を与えることを明らかにした事である。また、インバーターの試作にも成功した。本研究の成果により、レアメタルフリーで環境にも調和するZTO材料を用いて、フレキシブルディスプレイ駆動用TFTやバイオセンサーへの応用可能性を見出す事に成功した。この事は、環境に優しく持続可能な社会の実現に貢献するものであり、社会的意義も大きい。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (13 results)

All 2019 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (10 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Investigation on the gate insulator thickness dependence of ZnO-SnO2 thin film transistors2019

    • Author(s)
      Satoh Kazuo、Yamada Yoshiharu、Kanaoka Yusuke、Murakami Shuichi、Kakehi Yoshiharu、Sakurai Yoshiaki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: 3 Pages: 038004-038004

    • DOI

      10.7567/1347-4065/ab01f7

    • NAID

      210000135452

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of postannealing on properties of ZnO-SnO2 thin film transistors2018

    • Author(s)
      Satoh Kazuo、Murakami Shuichi、Kanaoka Yusuke、Yamada Yoshiharu、Kakehi Yoshiharu、Sakurai Yoshiaki
    • Journal Title

      Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films

      Volume: 36 Issue: 2

    • DOI

      10.1116/1.5003283

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of post annealing on properties of ZnO-SnO2 thin film transistors2017

    • Author(s)
      Kazuo Satoh, Shuichi Murakami, Yusuke Kanaoka, Yoshiharu Yamada, Yoshiharu Kakehi and Yoshiaki Sakurai
    • Journal Title

      Proceedings of the Fourteenth International Symposium on Sputtering and Plasma Processes

      Volume: - Pages: 221-223

    • NAID

      130005175703

    • Related Report
      2017 Research-status Report
  • [Presentation] Characteristics of ZnO-SnO2 Thin Film Transistors on Flexible Substrates2019

    • Author(s)
      Kazuo Satoh, Shuichi Murakami, Yusuke Kanaoka, Yoshiharu Yamada, Yoshiharu Kakehi, Yusuke Kondo and Yoshiaki Sakurai
    • Organizer
      11th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials(ISPlasma2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] フレキシブル基板上に作製したZnO-SnO2薄膜トランジスタの特性2018

    • Author(s)
      佐藤 和郎,村上 修一,金岡 祐介,山田 義春,筧 芳治,近藤 裕佑,櫻井 芳昭
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] レアメタルフリー材料ZnO-SnO2を用いた薄膜トランジスタ2018

    • Author(s)
      佐藤和郎
    • Organizer
      センサエキスポジャパン2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] スパッタリング法により作製したZnO-SnO2 を用いた薄膜トランジスタの熱処理効果2018

    • Author(s)
      佐藤和郎,村上修一,金岡祐介,山田義春,筧芳治,近藤裕佑,櫻井芳昭
    • Organizer
      2018年日本表面真空学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Investigation on the Gate Insulator Thickness Dependence of ZnO-SnO2 Thin Film Transistors2018

    • Author(s)
      Kazuo Satoh, Yoshiharu Yamada, Yusuke Kanaoka, Shuichi Murakami, Yoshiharu Kakehi and Yoshiaki Sakurai
    • Organizer
      10th Anniversary International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2018)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 熱処理がZnO-SnO2を用いた薄膜トランジスタ特性に与える影響(II)2017

    • Author(s)
      佐藤 和郎,村上 修一,金岡 祐介,中山 健吾,山田 義春,筧 芳治,櫻井 芳昭
    • Organizer
      第64回応用物理学会春季学術講演会
    • Place of Presentation
      横浜市
    • Year and Date
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] Effect of post annealing on properties of ZnO-SnO2 thin film transistors2017

    • Author(s)
      Kazuo Satoh, Shuichi Murakami, Yusuke Kanaoka, Yoshiharu Yamada, Yoshiharu Kakehi and Yoshiaki Sakurai
    • Organizer
      The Fourteenth International Symposium on Sputtering and Plasma Processes (ISSP2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 熱処理がZnO-SnO2を用いた薄膜トランジスタ特性に与える影響(III)2017

    • Author(s)
      佐藤 和郎,村上 修一,金岡 祐介,山田 義春,筧 芳治,近藤 裕佑,櫻井 芳昭
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Low temperature fabrication of ZnO-SnO2 thin film transistors2017

    • Author(s)
      Kazuo Satoh, Shuichi Murakami, Yusuke Kanaoka, Yoshiharu Yamada, Yusuke Kondo, Yoshiharu Kakehi, Yoshiaki Sakurai and Satoru Kaneko
    • Organizer
      5th Nano Today Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 熱処理がZnO-SnO2を用いた薄膜トランジスタ特性に与える影響2016

    • Author(s)
      佐藤 和郎,村上 修一,金岡 祐介,山田 義春,筧 芳治,櫻井 芳昭
    • Organizer
      第77回応用物理学会秋季学術講演会
    • Place of Presentation
      新潟市
    • Year and Date
      2016-09-14
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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