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Electronic states of free clusters and microcrystals by the selective-excitation time-resolved and space-resolved spectroscopies

Research Project

Project/Area Number 06640456
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅰ(光物性・半導体・誘電体)
Research InstitutionNihon University

Principal Investigator

MOCHIZUKI Shosuke  Nihon University, 文理学部, 教授 (20006159)

Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1995: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1994: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsCluster / Microcrystal / Nanocrystal / Quantum size effect / Exciton / Spin wave / Surface plasmon / Gas evaporation / 量子ドット / ガス中蒸発 / レーザーアブレーション / エネルギー移動 / アルカリ金属 / 集団運動(巨大共鳴) / 気相中のクラスター / エレクトロンスピルアウト
Research Abstract

The results are summarized as follows.
(1) two vertically well separated zones of alkali metal (Li, Na, K,Rb and Cs) vapors were produced above the evaporation source in a confined noble gas atmosphere by setting an appropriate condition for the gas evaporation. Optical extinction spectra of alkali atoms, dimers and clusters were obtained by time-resolved and space-resolved measurements after the beginning of the evaporation. Also, vapor species in each zone were selectively excited by using laser light and the emission spectra were measured. Some of the observed spectra were compared with theoretical ones, and information on the following points was derived : the growth of alkali-metal (Li, Na, K,Rb and Cs) -clusters and microcrystals and optical sgrowth in the gas evaporation method, the size trend of the collective mode resonance of the valence electrons, the excitation energy transfer between alkali vapor species and the structure of the vapor zone,
(2) well-directional semiconductor … More (CdS,ZnSe, CuCl, CuBr, Ge, PbS,AgBr, Agl) microcrystal beams were produced by the thermal evaporation in argon gas stream with a high velocity. The crystallite size increases with progressing the evaporation. During the evaporation, the light absorption (extinction) and photoluminescence spectra ofthe microcrystal beams were measured, together with the those of the microcrystals depositing on asubstrate, as a function of the time elapsed after the beginning of the evaporation. The results show the quantum comfinement effects of excitons and carriers.
and
(3) antiferromagnet (MnF_2, Rb_2MnCl_4 and CsMnBr_3) microcrystals were produced by the gas evaporation method. During the evaporation, the light absorption (extinction) and photoluminescence spectra of the microcrystal beams were measured, together with the those of the microcrystals depositing on a substrate, as a function of the time elapsed after the beginning of the evaporation. The results show the quantum comfinement and edge effects of excitons and spin waves. Less

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] S.Mochizuki: "Optical measurements on semiconductor microcrystal beam generated by gas evaboration" Journal of Luminescence. 70. 60-68 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki,K.Umezawa: "Optical absorption and photoluminescence of ZnSe microcrystals in a Pyrex glass matrix" Journal of Physics : Condensed Matter. 8. 7509-7521 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki,H.Nakata,M.Asanuma: "Optical spectra of free semiconductor microcrystals produced by thermal evaboration in noble-gas stream" Surface Review and Letters. 3. 523-528 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki,R.Rubbin: "An optical study of alkali metal vapor zones produced by thermal evaporation in helium gas" Journal of Physics : Condensed Matter. 6. 7303-7316 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki,H.Nakata,R.Rubbin: "Optical spectra of free and supported CuCl microcrystals produced by thermal evaporation in a helium gas stream" Journal of Physics : Condensed Matter. 6. 1269-1278 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shouseke Mochizuki,Mie Sasaki: "Light Absorption and Fluorescence Spectra of Lithium Vapor Species Produced by Thermal Luapordtion in Helium Gas Atmoshhere" Proceedings of International Symposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shouseke Mochizuki,Mikiko Jono,Kimihiro Ishi: "Quantum-Size Effects of Several Indirect-Gap-Type Semiconductor Microcrystals in Free and Embedded States" Proceedings of International Srmposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki,Hitoshi Nakata: "Optical Properties of CuBr Microcrystals in Polymer and Free Space" Proceedings of International Symposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuk,M.Sasaki: "Proceedings of the Science and technology of atomically engineered materials" World Scientific Publishing, 647(435-446) (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Nakata,S.Mochizuki: "Proceedings of the Science and technology of atomically engineered materials" World Scientific Publishing, 647(447-452) (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuk,M.Johno,K.Ishi: "Proceedings of the Science and technology of atomically engineered materials" World Scientific Publishing, 647(595-600) (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki, Hitoshi Nakata and Raphael Ruppin: "Optical spectra of free and supported CuCl microcrystals produced by thermal evaporation in a helium gas stream" Journal of Physics : Condensed Matter. 6. 1269-1278 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki and Raphael Ruppin: "An optical study of alkali metal vapor zones produced by thermal evaporation in helium gas" Journal of Physics : Condensed Matter. 6. 7303-7316 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki, Hitoshi Nakata and Masato Asanuma: "Optical spectra of free semiconductor microcrystals produced by thermal evaporation in noble-gas stream" Surface Review and Letters. 3. 523-528 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki and Kouta Umezawa: "Optical absorption and photoluminescence of ZnSe microcreystals in a Pyrex glass matrix" Journal of Physics : Condensed Matter. 8. 7509-7521 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki: "Optical measurements on semiconductor microcrystal beams generated by gas evaporation" Journal of Luminescence. 70. 60-68 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki and Kouta Umezawa: "Optical spectra of free and quasi-free Agl microcrystals" Physics Letters A. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki and Mie Sasaki: Light absorption and fluorescence spectra of lithium vapor species produced by thermal evaporation in helium gas atmosphere, Proceedings of The Science and Technology of Atomically Engineered Materials. World Scientific Publishing, New Jersey, 441-446 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hitoshi Nakata and Shosuke Mochizuki: Optical properties of CuBr microcrystals in Polymer and free space, Proceedings of The Science and Technology of Atomically Engineered Materials. World Scientific Publishing, New Jersey, 447-452 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Shosuke Mochizuki, Mikiko Johno and Kimihiro Ishi: Quantum size effects of everal indirect gap type semiconductor microcrystals in free and embedded states, Proceedings of The Science and Technology of Atomically Engineered Materials. World Scientific Publishing, New Jersey, 595-600 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Mochizuki: "Optical measurements on Semiconductor microcrystal beams generated by gas euaporation" Journal of Luminescence. 70. 60-68 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,K.Umezawa: "Optical absorption and photoluminescence of Znse microcrystals in a pyrex glass matrix" Journalof Physics : Condensed Matter. 8. 7509-7521 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,H.Nakata,M.Asanuma: "Optical spectra of free semiconductor microcrystals produced by thermal evaporation in noble-gas stream" Surface Review and Letters. 3. 523-528 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,R.Ruppin: "An optical study of alkali metal uapor zones produced by thermal evaporation in helium gas" Journalof Physics : Condensed Matter. 6. 7303-7316 (1994)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,H.Nakata,R.Ruppin: "Optical spectra of free and supported Cucl microcrystals produced by thermal evaporation in a helium gas stream" Journal of Physics : Condensed Matter. 6. 1269-1278 (1994)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,M.Sasaki: "Proceedings of the science and technology of atomically engineered materials" World Scientific Publishing, 647(435-446) (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Nakata,S.Mochizuki: "Proceedings of the science and technology of atomically engineered materials" World Scientific Publishing, 647(447-452) (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Mochizuki,M.Johno,K.Ishi: "Proceedings of the science and technology of atomically engineered materials" World Scientific Publishing, 647(595-600) (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shosuke Mochizuki, Mie Sasaki: "Light Absorption and Fluorescence Spectra of Lithium Vapor Species Produced by Thermal Evapordtion in Helium Gds Atmasphere" Proceedings of International Symposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] Shosuke Mochizuki Mikiko Jono, Kimihiko Ishi: "Quantum-Size Effects of Several Indirect-Gap-Tybe Semiconductor Microcrystals in Free and Embedded States" Proceedings of International Symposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] Shosuke Mochizuki, Hitoshi Nakata: "Optical Properties of CuBr Microcrystals in Polymer and Free Space" Proceedings of International Symposium on The Science and Technology of Atomically Engineered Materials. (印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] Shosuke Mochizuki: "An optical study of alkali-metal vapour zones produced by thermal evaporation in helium gas" Journal of Physics:Condensed Matter. 6. 7303-7316 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Shosuke Mochizuki: "Optical spectra of free semiconductor microcrystals produced by thermal evaporation in noble gas stream" Proceedings of ISSPIC7に受理.

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2020-05-15  

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