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Creation of nano-ordered structures of semiconductor quantum dots and elucidation of novel optical functions

Research Project

Project/Area Number 20H02549
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 28010:Nanometer-scale chemistry-related
Research InstitutionOsaka Metropolitan University (2022)
Osaka City University (2020-2021)

Principal Investigator

Kim DaeGwi  大阪公立大学, 大学院工学研究科, 教授 (00295685)

Co-Investigator(Kenkyū-buntansha) 渋田 昌弘  大阪公立大学, 大学院工学研究科, 准教授 (70596684)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2020: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywords半導体量子ドット / ナノ秩序構造体 / フェムト秒超高速分光 / 水熱合成法 / Layer-by-layer法 / Layer-by-Layer法
Outline of Research at the Start

本研究では、sub-nmで空間制御された半導体量子ドット(QD)ナノ秩序構造体を精密に作製する。さらに、QDナノ秩序構造体に発現する光機能の本質を理解し、制御・高度化する指針を得るために、フェムト秒レーザー分光を基盤とした時間分解計測により当該構造体の超高速光励起ダイナミクスを明らかにする。この研究の推進により、QDを始めとする機能性ナノスケール物質の高秩序構造化により現れる機能を見出し、先鋭化する学術基盤を築くことで、人間社会においてより高度な光エネルギーの生産・利用形態を開拓する。

Outline of Final Research Achievements

We have fabricated quantum dot superlattices (QDSLs) with precisely controlled in-plane and stacking distances by a layer-by-layer method using hydrothermally synthesized QDs and demonstrated that the dimension of quantum resonance can be controlled. Systematic investigation of the temperature dependence of absorption and photoluminescence (PL) spectra, as well as PL decay profiles, enabled us to propose a new PL model based on the miniband formation in the QDSLs. Furthermore, a femtosecond transient absorption spectroscopy system revealed that the signal originating from excited-state absorption is much shorter in QDSLs than in QD-dispersed samples. This provides a clue to the origin of the high charge-transfer properties expected in QDSLs.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、ナノスケール物質間の相互作用を積極的に利用・制御し、新たな物質機能を得る道筋を探求するものであり、対象とするQD秩序構造体の新規光機能を利用した新しい光デバイスや光学材料などの創出はもとより、ナノスケール物質単位を空間制御して配列することの難しさから、これまで機能設計に「秩序性」の概念を積極的に取り入れてこなかった分野 (例えば金属ナノ粒子を利用したプラズモニックデバイスや光触媒など) に新たな学術の視点を吹き込むことにより、1~数nmを機能単位としたナノスケール物質科学のブレークスルーを生み出すものである。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (27 results)

All 2023 2022 2021 2020 Other

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Optical constants of multilayered colloidal ZnSe nanoparticles2023

    • Author(s)
      Y. Shim, D. Kino, and D. Kim
    • Journal Title

      Thin Solid Films

      Volume: 768 Pages: 139688-139688

    • DOI

      10.1016/j.tsf.2023.139688

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intrinsic luminescence-downshifting effects of Zn-based Mn-doped nanoparticle layers on Si Solar Cells2022

    • Author(s)
      Y. Idutsu, K. Awai, J. Liang, H. Nishimura, D. Kim, Y.-G. Shim, and N. Shigekawa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 6 Pages: 062004-062004

    • DOI

      10.35848/1347-4065/ac5fc8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature-dependent photoluminescence properties of water-soluble CuInS2 and CuInS2/ZnS quantum dots2022

    • Author(s)
      K. Iida and D. Kim
    • Journal Title

      Journal of Applied Physics

      Volume: 132 Issue: 19

    • DOI

      10.1063/5.0105290

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrothermal synthesis of water-soluble Mn- and Cu-doped CdSe quantum dots with multi-shell structures and their photoluminescence properties2022

    • Author(s)
      Nishimura Hisaaki、Enomoto Kazushi、Pu Yong-Jin、Kim DaeGwi
    • Journal Title

      RSC Advances

      Volume: 12 Issue: 10 Pages: 6255-6264

    • DOI

      10.1039/d1ra08491g

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature-Dependent Exciton Dynamics in CdTe Quantum Dot Superlattices Fabricated via Layer-by-Layer Assembly2022

    • Author(s)
      Lee TaeGi、Ohshiro Kazuma、Watanabe Taichi、Hyeon‐Deuk Kim、Kim DaeGwi
    • Journal Title

      Advanced Optical Materials

      Volume: 10 Issue: 11 Pages: 2102781

    • DOI

      10.1002/adom.202102781

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019595

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Origin of photoluminescence of water-soluble CuInS2 quantum dots prepared via a hydrothermal method2021

    • Author(s)
      Iida Kazutaka、Uehigashi Yota、Kim DaeGwi
    • Journal Title

      RSC Advances

      Volume: 11 Issue: 53 Pages: 33186-33191

    • DOI

      10.1039/d1ra05761h

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Selective Hydrothermal Synthesis of Water-Soluble CdTe and CdTe/CdS Colloidal Quantum Dots by Controlling the Te/Cd Molar Ratio of the Precursor Solution2021

    • Author(s)
      Shimura Kunio、Lee TaeGi、Ito Tatsuya、Kim DaeGwi
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 94 Issue: 12 Pages: 2880-2885

    • DOI

      10.1246/bcsj.20210251

    • NAID

      130008144712

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019695

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water-soluble ZnSe/ZnS : Mn/ZnS quantum dots convert UV to visible light for improved Si solar cell efficiency2021

    • Author(s)
      Nishimura Hisaaki、Maekawa Takaya、Enomoto Kazushi、Shigekawa Naoteru、Takagi Tomomi、Sobue Susumu、Kawai Shoichi、Kim DaeGwi
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 9 Issue: 2 Pages: 693-701

    • DOI

      10.1039/d0tc04580b

    • NAID

      120007189879

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2020001

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectroscopic ellipsometry of monolayered CdS nanoparticles assembled by layer-by-layer method2020

    • Author(s)
      Y. G. Shim, A. Kitano, K. Wakita, and D. Kim
    • Journal Title

      Journal of Applied Physics

      Volume: 128 Issue: 7

    • DOI

      10.1063/5.0007740

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Controlling the dimension of the quantum resonance in CdTe quantum dot superlattices fabricated via layer-by-layer assembly2020

    • Author(s)
      Lee TaeGi、Enomoto Kazushi、Ohshiro Kazuma、Inoue Daishi、Kikitsu Tomoka、Hyeon-Deuk Kim、Pu Yong-Jin、Kim DaeGwi
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 5471

    • DOI

      10.1038/s41467-020-19337-0

    • NAID

      120006900889

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2020109

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Layer-by-layer法によるCdSe量子ドット超格子の作製と量子共鳴の観測2023

    • Author(s)
      楊震宇、米倉聖貴、金大貴
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ZnSとZnSeナノ粒子の混合積層膜作製と光学定数評価2023

    • Author(s)
      中谷開智、金大貴、沈用球
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水熱合成法によるCdSeおよびCuドープCdSeナノ粒子の作製と光学特性2022

    • Author(s)
      岡本潤哉、渋田昌弘、金大貴
    • Organizer
      2022光化学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CdTe 量子ドットクラスターの作製とミニバンド形成過程の観測2022

    • Author(s)
      永井優心、渋田昌弘、金大貴
    • Organizer
      第33回光物性研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CdSeナノ粒子超格子における量子共鳴の観測2022

    • Author(s)
      米倉聖貴、渋田昌弘、金大貴
    • Organizer
      第33回光物性研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CdSe量子ドットの3次光学非線形性2022

    • Author(s)
      市田正夫、松田修介、金大貴
    • Organizer
      第33回光物性研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] CdSナノ粒子間のエネルギー移動の温度依存性2022

    • Author(s)
      志村邦夫、金大貴
    • Organizer
      第33回光物性研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高繰返しフェムト秒時間分解分光システムの開発と光機能性量子ドット秩序集積薄膜の光励起ダイナミクス観測2022

    • Author(s)
      万竝亮、厚見洋明、金大貴、渋田昌弘
    • Organizer
      第33回光物性研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] One-, two-, and three-dimensional quantum resonance in CdTe quantum dot superlattices fabricated by layer-by-layer assembly2021

    • Author(s)
      TaeGi Lee, Kazushi Enomoto, Kazuma Ohshiro, Daishi Inoue, Tomoka Kikitsu, Kim Hyeon-Duk, Yong-Jin Pu, and DaeGwi Kim
    • Organizer
      11th Asian Photochemistry Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Synthesis of water-soluble ZnSe/ZnS:Mn/ZnS Quantum Dots and Application to Si Solar Cells as a Wavelength Conversion Materials2021

    • Author(s)
      64.Hisaaki Nishimura, Naoteru Nigekawa, and DaeGwi Kim
    • Organizer
      11th Asian Photochemistry Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CdTe量子ドット超格子における光学特性の温度依存性2021

    • Author(s)
      李太起, 金大貴
    • Organizer
      第32回光物性研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 水熱合成法によるCdSe/ZnS:Mn/ZnS ナノ粒子の作製 と光学特性2021

    • Author(s)
      西村 悠陽, 金 大貴
    • Organizer
      第32回光物性研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] CdTe量子ドット超格子の発光ダイナミクス2020

    • Author(s)
      李 ヨンシン、伊藤 達也、金 大貴
    • Organizer
      第31回光物性研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 波長変換ナノ粒子ZnSe/ZnS:Mn/ZnSの付加による太陽電池特性の向上 II2020

    • Author(s)
      西村 悠陽、前川 貴哉、高木 知己、祖父江 進、川井 正一、重川 直輝、金 大貴
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] CdTe量子ドット超格子における量子共鳴の次元制御2020

    • Author(s)
      李 太起、榎本 航之、大城 一馬、井ノ上 大嗣、喜々津 智郁、金 賢得、夫 勇進、金 大貴
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] CdTe量子ドット超格子におけるミニバンドの形成と光学特性2020

    • Author(s)
      李 ヨンシン、伊藤 達也、金 大貴
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Remarks] ナノ材料を利用した次世代デバイスの実現に期待!半導体量子ドット超格子における量子共鳴の次元制御を実現

    • URL

      https://www.osaka-cu.ac.jp/ja/news/2020/201030

    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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