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Organic-inorganic hybrid semiconductor nano-crystals towards submicroscopic region photonics

Research Project

Project/Area Number 15310070
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural science
Research InstitutionNational University Corporation Tokyo University of Agriculture and Technology

Principal Investigator

TANI Toshiro  National University Corporation Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, Strategic Research Initiative for Future Nano-science and Technology, Professor, 大学院・共生科学技術研究部, 教授 (60302923)

Co-Investigator(Kenkyū-buntansha) ODA Masaru  National University Corporation Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, Strategic Research Initiative for Future Nano-science and Technology, Research Associates, 大学院・共生科学技術研究部, 助手 (30345334)
ITO Tadashi  Osaka University, Graduate School of Engineering Science, Professor, 大学院・基礎工学研究科・(兼)生命機能研究科, 教授 (60004503)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,900,000 (Direct Cost: ¥15,900,000)
Fiscal Year 2005: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2004: ¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 2003: ¥9,100,000 (Direct Cost: ¥9,100,000)
KeywordsCdSe / ZnS / TOPO system / nanocrystal / quantum rod / organic-inorganic hybrid quantum dot / luminescence quantum yield / crystal growth / scanning laser microscope / blinking behavior / 有機無機ハイブリッド(複合) / CdSeナノ微結晶 / コア / シェル構造 / 配位溶媒 / コロイド法 / 光増大効果
Research Abstract

This report describes recent results of our basic research and development towards micro-photonics based on some specific quantum nano-structural photonic systems under the support of Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture (Category No.15310070).
We improved our custom-made scanning laser microscope for imaging and spectroscopic measurements at low temperatures. High performance of the original microscope enables us to utilize it for sensitive detections of photoluminescence from single quantum dots. The microscope is versatile for various kinds of objective lenses from solid immersion lens (SIL), aspherical lens commonly used in HDD memory system to the specifically-designed low-temperature objective. Laser scanning mechanism located outside the optical cryostat enables us to achieve large scanning ranges independent of sample temperatures.
Performance is demonstrated on single quantum dots detection based on CdSe/ZnS/TOPO organic-inorganic hybrid semiconductor nanocrystals prepared with a colloidal method. We have improved preparation protocols of capped CdSe and ZnS overcoated CdSe nanocrystals hugely, and quantum efficiency of photo-emission is now as high as 80% even at room temperature. The properties of quasi-0D Wannier exciton should be notable and have been investigated in details as well as their surface effects. Molecular J-aggregates by halogenated pseudoisocyanine in poly(vinylsulfate) thin films are also used for the comparison, in which quasi-1D Frenkel exciton is most notable. We have observed local reflection spectra of the J-aggregates fibril-shape structures provided in thin PVS polymer films and obtained supreme results. Present status of the investigations will be introduced.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (21 results)

All 2006 2005 2004 2003 Other

All Journal Article (16 results) Publications (5 results)

  • [Journal Article] Photoluminescence of CdSe/ZnS/TOPO nanocrystals expanded on silica glass substrates : Adsorption and desorption effects of polar molecules on nanocrystal surfaces2006

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando, H Horiuchi, T.Tani
    • Journal Title

      Journal of luminescence 119-120

      Pages: 570-575

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Photobrightening of CdSe/ZnS/TOPO nanocrystals2006

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando, H Horiuchi, T.Tani
    • Journal Title

      Journal of luminescence

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Anisotropic observation of absorption and fluorescence transition dipoles in exciton-polariton properties of PIC J-aggregates2006

    • Author(s)
      T.Tani, M.Oda, T.Hayashi, H.Ohno, K.Hirata
    • Journal Title

      Journal of luminescence

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Photoluminescence of CdSe/ZnS/TOPO nanocrystals expanded on silica glass substrates : Adsorption and desorption effects of polar molecules on nanocrystal surfaces.2006

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando, H Horiuchi, T.Tani
    • Journal Title

      Journal of luminescence 119-120

      Pages: 570-575

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Photobrightening of CdSe/ZnS/TOPO nanocrystals.2006

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando, H Horiuchi, T.Tani
    • Journal Title

      Journal of luminescence (in printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Anisotropic observation of absorption and fluorescence transition dipoles in exciton-polariton properties of PIC J-aggregates2006

    • Author(s)
      T.Tani, M.Oda, T.Hayashi, H.Ohno, K.Hirata
    • Journal Title

      Journal of luminescence (in printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Photobrightening of CdSe/ZnS/TOPO nanocrystals2006

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando.H Horiuchi, T.Tani
    • Journal Title

      Journal of Luminescence

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Photoluminescence of CdSe/ZnS/TOPO nanocrystals expanded on silica glass substrates : adsorption and desorption effects of polar molecules on nanocrystal surfaces2005

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, N.Iwami, K.Nishiura, I.Hagiwara, N.Ando, H Horiuchi, T.Tani
    • Journal Title

      Journal of Luminescence 119-120

      Pages: 570-575

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 有機分子に包まれたCapped-CdSeナノ結晶の発光特性2004

    • Author(s)
      小田 勝, 塚本純平, 長谷川篤史, 萩原 泉, 松林正行, 谷 俊朗
    • Journal Title

      高分子論文集 61・1

      Pages: 63-74

    • NAID

      10011982154

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Microscopic exciton properties of fibril-shaped molecular J-aggregates prepared in ultra-thin polymer films2004

    • Author(s)
      T.Tani, M.Saeki, Y.Yamaguchi, T.Hayashi, M Oda
    • Journal Title

      Journal of luminescence 107

      Pages: 339-346

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Photoluminescence properties of capped- CdSe nanocrystals covered with organic molecules.2004

    • Author(s)
      M.Oda, J.Tsukamoto, A.Hasegawa, I.Hagiwara, M.Matsubayashi, T.Tani
    • Journal Title

      Kobunshi Rnonbunshu 61(1)

      Pages: 63-74

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Microscopic exciton properties of fibril-shaped molecular J-aggregates prepared in ultra-thin polymer films.2004

    • Author(s)
      T.Tani, M.Saeki, Y.Yamaguchi, T.Hayashi, M Oda
    • Journal Title

      Journal of luminescence 107

      Pages: 339-346

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Local reflection micro-spectroscopy of excitons in fibril-shaped molecular J-aggregates prepared in PVA thin films2003

    • Author(s)
      T.Tani, Y.Yamaguchi, M.Saeki, M.Oda, M.Vacha
    • Journal Title

      Journal of luminescence 102

      Pages: 27-33

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 薄膜中のフィブリル構造分子性J-会合体-作製と局所光物性評価2003

    • Author(s)
      谷俊朗, 山口義宏, 林俊秀, 小田勝
    • Journal Title

      高分子論文集 60・12

      Pages: 712-724

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Local reflection micro-spectroscopy of excitons in fibril-shaped molecular J-aggregates prepared in PVA thin films.2003

    • Author(s)
      T.Tani, Y.Yamaguchi, M.Saeki, M.Oda, M.Vacha
    • Journal Title

      Journal of luminescence 102

      Pages: 27-33

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Fibril-shaped Molecular J-aggregates in Thin Polymer Films - Preparation and Local Photo-physics.2003

    • Author(s)
      T.Tani, Y.Yamaguchi, T.Hayashi, M Oda
    • Journal Title

      Kobunshi Rnonbunshu 60(12)

      Pages: 712-724

    • NAID

      130004035579

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] 小田 勝, 塚本純平, 長谷川篤史, 萩原 泉, 松林正行, 谷 俊朗: "有機分子に包まれたCapped-CdSeナノ結晶の発光特性"高分子論文集. 61・1. 63-74 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 谷 俊朗, 山口義弘, 林 俊秀, 小田 勝: "高分子薄膜中のフィブリル構造分子性J-会合体-作製と局所光物性評価"高分子論文集. 60・12. 712-724 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Tani, Y.Yamaguchi, K.Ohuchi, M.Oda: "Single-molecule optical detections of carboxytetramethylrhodamine connected by alkyl chains on silica glass substrates"J.Lumin.. 107・1-4. 42-50 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Tani, M.Saeki, Y.Yamaguchi, T.Hayashi, M.Oda: "Microscopic exciton properties of fibril-shaped molecular J-aggregates prepared in ultra-thin polymer films"J.Lumin.. 107・1-4. 339-346 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Tani: "Single Organic Nanoparticles, Eds. H.Masuhara, H.Nakanishi, K.Sasaki ; 15 Photophysics of Capped Nanocrystals and Molecular J-Aggregates"Springer-Verlag, Berlin, Heidelberg, New York. 402(185-202) (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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