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Spectroscopic Studies of Surface Layers of Semiconductor Microcrystals

Research Project

Project/Area Number 01460078
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Applied materials
Research InstitutionKobe University

Principal Investigator

YAMAMOTO Keiichi  Kobe University, Faculty of Engineering Professor, 工学部, 教授 (80031087)

Co-Investigator(Kenkyū-buntansha) AOKI Kazunori  Kobe University, Faculty of Engineering Research Associate, 工学部, 助手 (80112077)
HAYASHI Shinji  Kobe University, Faculty of Engineering Associate Professor, 工学部, 助教授 (50107348)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1991: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1990: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1989: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsSemiconductors / Microcrystals / Raman spectroscopy / Infrared spectroscopy / Photoluminescence / Gas-evaporation / マトリックス法
Research Abstract

In general, optical studies of solid surfaces are extremely difficult, because the number of atoms interacting with incident light is extremely small and the optical signals containing the information about the surfaces are extremely weak. However, for the study of surface layers of microcrystals, which are essentially the systems having large surface-tovolume ratios, the optical spectroscopies are expected to be effective. In this research project, we used mainly the infrared and Raman spectroscopy in an attempt to prove the effectiveness of the optical studies of the micocrystalline surfaces.
It turned out that infrared absorption by surface oxide layers of gas-evaporated Si and Ge microcrystals can easily be observed. Furthermore, processes of the formation of the natural and thermal oxides could be investigated in detail. Under the conditions of surface plasmon excitation, the surface-enhanced Raman scattering from the surface layers of Ag small particles could be clearly observed. The Raman signals from surface layers of extremely small Ge microcrystals (less than 50A in diameter) could also be observed. All these experimental results demonstrate the effectiveness of the optical spectroscopy for the studies of the microcrystalline surfaces.
we also studied the phase transition behavior of gas-evaporated W03 microcrystals using the Raman spectroscopy. We found a new phase which is not reported so far for the bulk crystals. The appearance of the new phase seems to be caused by the existence of the surfaces. For various kinds of microcrystals, we have demonstrated the quantumsize effects from the measurements of resonance-Raman scattering, optical absorption and photoluminescence. In some cases, we suggested the importance of the surface effects, which are superposed on the quantum size effects.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (50 results)

All Other

All Publications (50 results)

  • [Publications] S.Hayashi,R.Koh,K.Yamamoto and H.Ishida: "Surface-Enhanced Raman Scattering from Surface Layers of Gas-Evaporated Silver Small Particles." Jpn.J.Appl.Phys.28. 1444-1449 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,M.Fujii and K.Yamamoto: "Quantum Size Effects in Ge Microcrystals Embedded in SiO_2 Thin Films" Jpn.J.Appl.Phys.28. 1464-1466 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,H.Sanda,M,Agata and K.Yamamoto: "Resonant Raman Scattering from Zn Te Microcrystals:Evidence for Quantum Size Effects" Phys.Rev.B. 40. 5544-5548 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 林 真至: "超微粒子・マイクロクラスタ-の光物性" 数理科学. 316. 18-20 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi and K.Yamamoto: "Raman Scattering from Microcrystals" Phase Transitions. 24-26. 641-660 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Arai,S.Hayashi,K.Yamamoto and S.S.Kim: "Raman Studies of Phase Transitions in Gas-Evaporated WO_3 Microcrystals" Solid State Commun.75. 613-616 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Agata,H.Kurase,S.Hayashi and K.Yamamoto: "Photoluminescence Spectra of Gas-Evaporated CdS microcrystals" Solid State Commun.76. 1061-1065 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,R.Koga,M.Ohtsuji and K.Yamamoto: "Surface Plasmon Resonances in Gas-Evaporated Ag Small Particles:Effects of Aggregation" Solid State Commun.76. 1067-1070 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,S.Tanimoto and K.Yamamoto: "Analysis of Surface Oxides of Gas-Evaporated Si Small Particles with Infrared Spectroscopy,High-Resolution Electron microscopy,and X-Ray Photoemission Spectroscopy" J.Appl.Phys.68. 5300-5308 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Quantum Dots of Ge Embedded in SiO_2 Thin Films:Optical Properties" Proc.20th Int.Conf.on the Physics of Semiconductors. 3. 2375-2378 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,S.Tanimoto,M.Fujii and K.Yamamoto: "Surface Oxide Layers of Si and Ge Nanocrystals" Superlattices and Microstructures. 8. 13-18 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Raman Scattering from Quantum Dots of Ge Embedded in SiO_2 Thin Films" Appl.Phys.Lett.57. 2692-2694 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Growth of Ge Microcrystals in SiO_2 Thin Film Matrices:A Raman and Electron Microscopic Study" Jpn.J.Appl.Phys.30. 687-694 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.fujii,T.Nagata,S,Hayashi and K.Yamamoto: "Low-Frequency Raman Scattering from Small Silver Particles Embedded in SiO_2 Thin Films" Phys.Rev.B. 44. 6243-6248 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 林 真至: "固体マトリックスに埋め込んだ超微粒子の光物性" 真空. 34. 799-806 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fujii,T.Nagata S.Hayashi and K.Yamamoto: "Raman Scattering from Acoustic Phonons Confined in Microcrystals:Small Gold and Silver Particles Embedded in SiO_2 Thin Films" J.Phys.Soc.Jpn.61. 754-755 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Hayashi,H.Sugano,H.Arai and K.Yamamoto: "Phase Transitions in Gas-Evaporated WO_3 Microcrystals:A Raman Study" J.Phys.Soc.Jpn.61. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Risho Koh, Keiichi Yamamoto and Hideyuki Ishida: "Surface-Enhanced Raman Scattering from Surface Layers of Gas-Evaporated Silver Small Particles." Jpn. J. Appl. Phys.28. 1444-1449 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Minoru Fujii and Keiichi Yamamoto: "Quantum Size Effects in Ge Microcrystals Embedded in SiO_2 Thin Films." Jpn. J. Appl. Phys.28. 1464-1466 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Hiroyuki Sanda, Masashi Agata and Keiichi Yamamoto: "Resonant Raman Scattering from ZnTe Microcrystals : Evidencce for Quantum Size Effects." Phys. Rev.B40. 5544-5548 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Hayashi: "Optical properties of Microcrystals and Microclusters (in Japanese)." Suurikagaku. 316. 18-20 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi and Keiichi Yamamoto: "Raman Scattering from Microcrystals." Phase Transitions. 24-26. 641-660 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Masahiro Arai, Shinji Hayashi, Keiichi Yamamoto and Soon Sik Kim: "Raman Study of Phase Trancitions in Gas-Evaporated WO_3 Microcrystals." Solid State Commun.75. 613-616 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Masashi Agata, Hiroyuki Kurase, Shinji Hayashi and Keiichi Yamamoto: "Photoluminescence Spectra of Gas-Evaporated CdS Microcrystals." Solid State Commun.76. 1061-1065 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Ryuji Koga, Michiya Ohtsuji and Keiichi Yamamoto: "Surface Plasmon Resonances in Gas-Evaporated Ag Small particles : Effects of Aggregation." Solid State Commun.76. 1067-1070 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Shinichi Tanimoto and Keiichi Yamamoto: "Analysis of Surface Oxides of Gas-Evaporated Si Small Particles with Infrared Spectroscopy, High-Resolution Electron Microscopy, and X-Ray Photoemission Spectroscopy." J. Appl. Phys.68. 5300-5308 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minoru Fujii, Shinji Hayashi and Keiichi Yamamoto: "Quantum Dots of Ge Embedded in SiO2 Thin Films : Optical Properties." Proc. 20th Int. Conf. Phys. of Semiconductors. 3. 2375-2378 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Shinichi Tanimoto, Minoru Fujii and Keiichi Yamamoto: "Surface Oxide Layers of Si and Ge Nanocrystals." Superlattices and Microstructures. 8. 13-18 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minoru Fujii, Shinji Hayashi and Keiichi Yamamoto: "Raman Scattering from Quantum Dots of Ge Embedded in SiO_2 Thin Films." Appl. Phys. Lett.57. 2692-2694 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minoru Fujii, Shinji Hayashi and Keiichi Yamamoto: "Growth of Ge Microcrystals in SiO2 Thin Film Matrices : A Raman and Electron Microscopic Study." Jpn. J. Appl. Phys.30. 687-694 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minoru Fujii, Takeshi Nagareda, Shinji Hayashi and Keiichi Ymamoto: "Low-Frequency Raman Scattering from Small Silver Particles Embedded in SiO_2 Thin Films." Phys. Rev.B44. 6243-6248 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Hayashi: "Optical Properties of Microcrystals Embedded in Solid Matrices (in Japanese)." Shinkuu. 34. 799-806 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Minoru Fujii, Takeshi Nagareda, Shinji Hayashi and Keiichi Yamamoto: "Raman Scattering from Acoustic phonons Confined in Microcrystals : Small Gold and Silver Particles Embedded in SiO_2 Thin Films." J. Phys. Soc. Jpn.61. 754-755 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Hayashi, Hiroki Sugano, Hiroshi Arai and Keiichi Yamamoto: "Phase Transitions in Gas-Evaporated WO_3 Microcrystals : A Raman Study" J. Phys. Soc. Jpn. 61. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Growth of Ge Microcrystals in SiO_2 Thin Film Matrices:A Raman and Electron Microscopic Study" Jpn. J. Appl. Phys.30. 687-694 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fujii,T.Nagata,S.Hayashi and K.Yamamoto: "LowーFrequency Raman Scattering from Small Silver Particles Embedded in SiO_2 Thin Films" Phys. Rev. B. 44. 6243-6248 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 林 真至: "固体マトリックスに埋め込んだ超微粒子の光物性" 真空. 34. 799-806 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fujii,T.Nagata S.Hayahi and K.Yamamoto: "Raman Scattering from Acoustic Phonons Confined in Microcrystals:Small Gold and Silver Particles Embedded in SiO_2 Thin Films" J. Phys. Soc. Jpn.61. 754-755 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Hayashi,H.Sugano,H.Arai and K.Yamamoto: "Phase Transitions in GasーEvaporated WO_3 Microcrystals:A Raman Study" to be published in J. Phys. Soc. Jpn.61. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Hayashi,S.Tanimoto and K.Yamamoto: "Analysis of Surface Oxides of GasーEvaporoted Si Smoll Particles with Infrared Spectroscopy,Highーresolution Electron Microscopy and Xーroy Photoemission Spectroscopy" J.Appl.Phys.68. 5300-5308 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Hayashi and K.Yamamoto: "Raman Scottering from Microcrystols" Phase Transitions. 24ー26. 641-660 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Agata,H.Kurase,S.Hayashi and K.Yamamoto: "Photo luminesceuce Spectra of GasーEvaporoted CdS Microcrystals" Solid State Commun.76. 1061-1065 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Hayashi,R.Koga,M.Ohtuji and K.Yamamoto: "Suface Plasinon Resonances in GasーEvaporated Ag Small Particles:Effects of Aggregation" Solid State Commun.76. 1067-1070 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Quantum Dots of Ge Embedded in SiO_2 Thin Films.Optical Properties" Proc 20th Int.Cnf.Physics of Semiconductors. 2375-2378 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Fujii,S.Hayashi and K.Yamamoto: "Raman Scotteing from Quantum Dots of Ge Embedded in SiO_2 Thin Films" Appl.Plys.Lott.57. 2692-2694 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Hayashi,H.Sanda,M.Agata,K.Yamamoto: "Resonant Raman scattering from ZnTe microcrystals:Evidence for quantum size effects" Phys.Rev.B. 40. 5544-5548 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] S.Hayashi,M.Fujii,K.Yamamoto: "Quantum Size Effects in Ge Microcrystals Embedded in SiO_2 Thin Films" Jpn.J.Appl.Phys.28. L1464-1466 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 林真至: "超微粒子・マイクロクラスタ-の光物性" 数理科学. 316. 18-20 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] S.Hayashi,K.Yamamoto: "Raman Scattering from Microcrystals" Phase Transitions. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] S.Hayashi,S.Tanimoto,K.Yamamoto: "Analysis of surface oxides of gas-evaporated Si small particles with infrared spectroscopy,high-resolution electron microscopy and X-ray photoemission spectroscopy" J.Appl.Phys.

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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