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Studies of thermoelectric conversion characteristics in metal/ single-molecule / metal junctions for highly efficient organic thermoelectric devices

Research Project

Project/Area Number 17K19104
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Physical chemistry, Functional solid state chemistry, and related fields
Research InstitutionOsaka University

Principal Investigator

Yamada Ryo  大阪大学, 基礎工学研究科, 准教授 (20343741)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords熱電変換 / 分子エレクトロニクス / 走査型トンネル顕微鏡 / 熱起電力 / 単分子接合 / ナノ接合
Outline of Final Research Achievements

We have developed an evaluation method to clarify the thermoelectric properties of metal-organic-metal junctions, which are expected to be able to convert waste heat into electric power with high efficiency, and have made it possible to study the thermoelectromotive force in the most basic structure, single-molecule junctions in which one molecule connects two metals. We have also clarified the electrical conduction mechanism of large organic molecules, which has been rarely studied before, and have developed a method for measuring the thermoelectricity of single-molecule junctions and clarified the electrical conduction properties.

Academic Significance and Societal Importance of the Research Achievements

エネルギー利用効率を高める上で、温度差を直接電力に変換する熱電変換が注目されている。高効率の熱電変換を実現するには結晶や薄膜ではなく、界面の性質を利用する必要がある。本研究では、とくに高い熱電変換効率が期待されている一次元系の電子状態を実現できる一つの分子における熱電変換と電気伝導特性を研究した。この研究の推進により高効率熱電変換を実現するための新奇ナノ集合体材料や界面生後の指針を得ることができる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (22 results)

All 2020 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (18 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Book (1 results)

  • [Journal Article] Electrical conductance measurement of HgII-mediated DNA duplex in buffered aqueous solution2020

    • Author(s)
      Ryo Yamada,Issei Nomura,Yuki Yamaguchi,Yosuke Matsuda,Yoshikazu Hattori,Hirokazu Tada,Akira Ono &Yoshiyuki Tanaka
    • Journal Title

      Nucleosides, Nucleoteides & Nucleic Acids

      Volume: 0 Issue: 8 Pages: 0-0

    • DOI

      10.1080/15257770.2020.1755044

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of cis-trans Conformation between Thiophene Rings on Conductance of Oligothiophenes2019

    • Author(s)
      Ohto Tatsuhiko、Inoue Takuya、Stewart Helen、Numai Yuichi、Aso Yoshio、Ie Yutaka、Yamada Ryo、Tada Hirokazu
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 10 Issue: 18 Pages: 5292-5296

    • DOI

      10.1021/acs.jpclett.9b02059

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Highly Planar and Completely Insulated Oligothiophenes: Effects of π-Conjugation on Hopping Charge Transport2019

    • Author(s)
      Ie Yutaka、Okamoto Yuji、Inoue Takuya、Tone Saori、Seo Takuji、Honda Yasushi、Tanaka Shoji、Lee See Kei、Ohto Tatsuhiko、Yamada Ryo、Tada Hirokazu、Aso Yoshio
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 10 Issue: 12 Pages: 3197-3204

    • DOI

      10.1021/acs.jpclett.9b00747

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] ナノ接合の熱伝導度測定のための懸垂型素子の開発2020

    • Author(s)
      花村友喜、山田亮、夛田博一
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Hg(II)会合型DNA単分子接合の電気伝導度計測2019

    • Author(s)
      山田 亮,野村 一世,山口 雄輝, 松田 陽佑, 夛田 博一, 小野 晶, 田中 好幸
    • Organizer
      第10回分子アーキテクトニクス研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 単一分子接合の熱伝導率計測に向けたサブミクロンスケールの熱電対の開発2019

    • Author(s)
      花村 友喜、山田 亮、夛田 博一
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Constriction induced thermo-electric voltage in a mesoscopic single metal wire2019

    • Author(s)
      Grace Gita Redhyka、Ryo Yamada、Hirokazu Tada
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 単分子接合の電流電圧特性の解析による電子状態と吸着構造の評価2019

    • Author(s)
      山田 亮・大戸 達彦・Helen Stewart・井上 拓哉・沼井 優一・家 裕隆・安蘇 芳雄・夛田 博一
    • Organizer
      日本化学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 花村 友喜、山田 亮、夛田 博一2019

    • Author(s)
      ナノ材料の熱物性の計測に向けたマイクロスケール熱電対の開発
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Single-molecule rectifiers based on voltage-dependent deformation of molecular orbitals in carbazole oligomers2019

    • Author(s)
      Tatsuhiko Ohto, Ken Albrecht, Ryo Yamada, Keigo Minode, Kimihisa Yamamoto, Hirokazu Tada
    • Organizer
      APS March Meeting 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Preparation of nano-scale electrodes via electron-beam lithography toward three-terminal single-molecule devices2019

    • Author(s)
      Toshiki Tanimura, Ryo Yamada, Hirokazu Tada
    • Organizer
      International Symposium on Emerging Materials 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Development of the Mechanically Controllable Break Junction System with Electrochemical Gating2019

    • Author(s)
      Rachmat Andika, Yuichi Numai, Jannis Jung, Helen Stewart, Tatsuhiko Ohto, Ryo Yamada, Hirokazu Tada
    • Organizer
      International Symposium on Emerging Materials 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Preparation of micro-thermocouples for thermal transport measurements of nano-materials2019

    • Author(s)
      Yuki Hanamura, Ryo Yamada, Hirokazu Tada
    • Organizer
      International Symposium on Emerging Materials 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] Electronic transport calculation based on density functional theory and its application to a single-molecule rectifier due to voltage-dependent deformation of molecular orbitals2019

    • Author(s)
      Tatsuhiko Ohto, Ryo Yamada, and Hirokazu Tada
    • Organizer
      International Symposium on Emerging Materials 2019
    • Related Report
      2018 Research-status Report
  • [Presentation] 三脚末端基を含む単分子接合のアンカー形状 :電流 -電圧特性による数値解析2018

    • Author(s)
      沼井優一, 井上拓也, 美濃出圭悟, 徳本潤平, 山田 亮, 大戸達彦, 家裕隆, 安蘇芳雄, 夛田博一
    • Organizer
      第9回分子アーキテクトニクス研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] オリゴチフェン単分子接合の電気伝導度2018

    • Author(s)
      Helen Stewart, 沼井優一, 井上拓也, 山田 亮, 大戸達彦, 家裕隆, 安蘇芳雄, 夛田博一
    • Organizer
      第9回分子アーキテクトニクス研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 教師なし機械学習と第一原理計算を用いた単一分子接合の架橋構造解析2018

    • Author(s)
      大戸 達彦、沼井 優一、井上 拓也、美濃出 圭悟、徳本 潤平、山田 亮、家 裕隆、安蘇 芳雄、夛田 博一
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] ナノ材料の電気特性計測のための二次元バーコード座標マーカー基板の作製2018

    • Author(s)
      花村 友喜、Redhyka Grace、山田 亮、夛田 博一
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 金属錯体単分子接合における電流電圧特性と二値ノイズの観測2018

    • Author(s)
      山田 亮
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 金属錯体分子ワイヤを用いた単分子膜素子における電圧による多値の抵抗変化スイッチング現象2017

    • Author(s)
      山口真理子,信末俊平,山田 亮,夛田博一
    • Organizer
      第8回分子アーキテクトニクス研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Thermopower Measurement of Oligothiophene Wires2017

    • Author(s)
      S. K. Lee, R. Yamada, and H. Tada
    • Organizer
      2017 International Workshop on Electrified Interfaces for Energy Conversions
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] 分子アーキテクトにクス(CSJ:31)2018

    • Author(s)
      日本化学会 編集
    • Total Pages
      220
    • Publisher
      化学同人
    • ISBN
      9784759813913
    • Related Report
      2018 Research-status Report

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Published: 2017-07-21   Modified: 2021-02-19  

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