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Spin-spin interactions in impurity-doped core/shell semiconductor nanocrystals

Research Project

Project/Area Number 19740183
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics I
Research InstitutionNara Institute of Science and Technology

Principal Investigator

ISHIZUMI Atsushi  Nara Institute of Science and Technology, 物質創成科学研究科, 助教授 (10346314)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,650,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywords光物性 / 不純物ドープ / コア / シェル型半導体ナノ粒子 / マンガンイオン / 発光ダイナミクス / 単一ナノ粒子分光
Research Abstract

本研究では、光学および磁気活性な遷移金属イオン(Mnイオン)を不純物としてドープしたコア/シェル型半導体ナノ粒子(CdS:Mn/ZnS)を作製し、その光学特性について詳細に調べた。Mn濃度を変化させた場合のMn発光強度、ダイナミクス、磁気円二色性スペクトルなどの測定では、Mn濃度の上昇に伴いMnイオン間の交換相互作用によって反磁性結合したMnペアが形成し、これが光学特性に影響を及ぼすことが明らかになった。また、単一ナノ粒子分光によるMn発光の測定では、Mnイオンと励起子との交換相互作用による高効率エネルギー移動によって、Mn発光が安定化し発光明滅現象が抑制されることが示された。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (17 results)

All 2009 2008 2007 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (9 results)

  • [Journal Article] Mn-Mn couplings in Mn-doped CdS nanocrystals studied by magnetic circular dichroism spectroscopy2009

    • Author(s)
      S. Taguchi, A. Ishizumi, T. Tayagaki, and Y. Kanemitsu
    • Journal Title

      Appl. Phys. Lett. 94

    • NAID

      120001682374

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 半導体ナノ粒子への不純物ドーピング : 新しい発光材料の探索2008

    • Author(s)
      石墨淳, 金光義彦
    • Journal Title

      日本物理学会誌 63

      Pages: 366-369

    • NAID

      110006664600

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence Dynamics of Mn^<2+>-Doped CdS/ZnS Core/Shell Nanocrystals : Mn^<2+> Concentration Dependence2008

    • Author(s)
      A. Ishizumi, E. Jojima, A. Yamamoto, and Y. Kanemitsu
    • Journal Title

      J. Phys. Soc. Jpn. 77

    • NAID

      110006665982

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication and optical properties of Eu^<3+>-doped ZnO nanospheres and nanorods2008

    • Author(s)
      A. Ishizumi, Y. Takahashi, A. Yamamotoa, Y. Kanemitsu
    • Journal Title

      Mat. Sci. Eng. B. 146

      Pages: 212-215

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 半導体ナノ粒子への不純物ドーピング : 新しい発光材料の探索2008

    • Author(s)
      石墨淳
    • Journal Title

      日本物理学会誌 63

      Pages: 366-369

    • NAID

      110006664600

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication and optical properties of Eu^<3+>-doped ZnO nanospheres and nanorods2008

    • Author(s)
      A. Ishizumi
    • Journal Title

      Mat. Sci. Eng. B. 146

      Pages: 212-215

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photoluminescence Dynamics of Mn^<2+>-doped CdS/ZnS Core/Shell Nanocrystals: Mn^<2+> Concentration Dependence2008

    • Author(s)
      A. Ishizumi
    • Journal Title

      J. Phys. Soc. Jpn. 77(印刷中)

    • NAID

      110006665982

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mn-Mn couplings in Mn-doped CdS nanocrystals studied by magnetic circular dichroism spectroscony

    • Author(s)
      S. Taguchi
    • Journal Title

      Appl. Phys. Lett. (in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Mnドープしたコア/シェル型CdSおよびZnSナノ粒子の磁気光学特性2009

    • Author(s)
      田口誠二, 石墨淳, 金光義彦
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      東京
    • Year and Date
      2009-03-30
    • Related Report
      2008 Final Research Report
  • [Presentation] コア/シェル型CdS : Mn/ZnSナノ粒子の粒径およびコア/シェル比制御と光学特性2009

    • Author(s)
      石墨淳, 宇田貴裕, 春田晃太郎, 柳久雄
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      東京
    • Year and Date
      2009-03-28
    • Related Report
      2008 Final Research Report
  • [Presentation] コア/シェル型CdS : Mn/ZnSナノ粒子の粒径およびコア/シェル比制御と光学特性2009

    • Author(s)
      石墨淳
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      東京(立教大学)
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] Photoluminescence Blinking in Single Mn-doped and Undoped CdS/ZnS Core/Shell Nanocrystals2008

    • Author(s)
      A. Ishizumi and Y. Kanemitsu
    • Organizer
      International Conference on the Physics of Semiconductors (ICPS 2008)
    • Place of Presentation
      Rio de Janeiro (Brazil)
    • Year and Date
      2008-07-31
    • Related Report
      2008 Final Research Report
  • [Presentation] Photoluminescence Blinking in Single Mn-doped and Undoped CdS/ZnS Core/Shell Nanocrvstals2008

    • Author(s)
      A. Ishizumi
    • Organizer
      International Conference on the Physics of Semiconductors (ICPS 2008)
    • Place of Presentation
      Rio de Janeiro (Brazil)
    • Year and Date
      2008-07-31
    • Related Report
      2008 Annual Research Report
  • [Presentation] 単一のコア/シェル型CdS : Mn/ZnSナノ粒子における発光明滅現象2008

    • Author(s)
      石墨淳, 金光義彦
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      大阪
    • Year and Date
      2008-03-23
    • Related Report
      2008 Final Research Report
  • [Presentation] 単一のコア/シェル型CdS:Mn/ZnSナノ粒子における発光明滅現象2008

    • Author(s)
      石墨 淳
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      東大阪市(近畿大学)
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] コア/シェル型ZnS : Mnナノ粒子の粒径制御と光学特性2007

    • Author(s)
      石墨淳, 大井宏信, 山本愛士, 金光義彦
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道
    • Year and Date
      2007-09-21
    • Related Report
      2008 Final Research Report
  • [Presentation] コア/シェル型ZnS:Mnナノ粒子の粒径制御と光学特性2007

    • Author(s)
      石墨 淳
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      札幌市(北海道大学)
    • Year and Date
      2007-09-21
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2020-05-15  

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