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2002 Fiscal Year Final Research Report Summary

Widegap Semiconductor Thin Film Prepared >From Soluble Silicon Nanocluster Substituted with Organic Group

Research Project

Project/Area Number 11559003
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 広領域
Research InstitutionTohoku University

Principal Investigator

WATANABE Akira  Institute of Multidisciplinary Research for Advanced Materia, Tohoku University, Associate Professor, 多元物質科学研究所, 助教授 (40182901)

Co-Investigator(Kenkyū-buntansha) HOJO Fusao  Hitachi Ltd, Hitachi Research Laboratory, Researcher, 材料第一研究部, 研究員(研究職)
MIWA Takao  Hitachi Ltd, Hitachi Research Laboratory, Researcher, 材料第一研究部, 主任研究員(研究職)
FUJITSUKA Mamoru  Institute of Scientific and Industrial Research, Osaka University, Associate Professor, 産業科学研究所, 助教授 (40282040)
Project Period (FY) 1999 – 2002
KeywordsOrganosilicon Nanocluster / Precursor / Silicon Coation / Haser annealing / Widegap semiconductor / Optical and Electrical Properties / Organogermanium nanocluster / Laser annealing
Research Abstract

Although conventional methods for the formation of silicon thin films are such as chemical vapor deposition (CVD), plasma-enhanced CVD, the deposition rate by the gas-phase reaction of unstable species in a vacuum chamber is limited. If we develop a procedure to form a semiconducting thin film by the liquidphase process using a soluble and stable precursor, it would reduce the processing costs and enhance the efficiency of large-area device fabrication such as solar cell and thin film transistor (TFT) for LCD driver. In this study, we have developed a novel procedure for the formation of a silicon thin film by a liquid-phase process using an organosoluble silicon cluster as a precursor. The organosilicon cluster has a three-dimensional silicon skeleton and the organic substituents around the Si core and the organic groups bring about solubility in common organic solvents. By the heat treatment of a precursor film above 4O0℃ in vacuo, an inorganic film witht an amorphous silicon structure is prepared by the elimination of organic substituents. The film was crystallized by XeCl excimer laser annealing. The structural changes of the precursor film caused by preheating and excimer laser annealing were investigated by Raman spectroscopy. The size of the Si grain depended on the energy density and the number of the laser shot. The optical band gap and the electrical properties can be controlled by the heat treatment temperature and the laser annealing conditions. To modify the properties of the silicon film, the formation of the Si-Ge alloy using an organogermanium nanocluster as a precursor was investigated. The application of the laser-induced pyrolysis to the organogermanium/organosilicon nanocluster layered film provides a novel method to form a Si-Ge alloy.

  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] A.Watanabe: "Micropatterning of SiO2 Film using Organosilicon Nanocluster as a Precursor"Thin Solid Films. 354. 13-18 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E.Hendrickx: "Photorefractive Polysilanes Functionalized with a Nonlinear Optical Chromophore"Macromolecules. 32. 2232-2238 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺 明: "有機・無機の枠を越えた材料設計"高分子加工. 49. 251-258 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanabe: "Effect of Hydrogen Plasma Treatment on Formation of Amorphous Silicon Film Using Oragnosoluble Silicon Cluster as a Precursor"Jpn.J.Appl.Phys. 30. L961-L963 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanabe: "Silicon-Germanium Alloys Prepared by the Heat-Treatment of Silicon Substrate Spin-Coated with Prgano-Soluble Germanium Cluster"Materials Letters. 89. 89-94 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Preparation of Germanium Thin Film by a Coating Technique Using a Soluble Organogermanium Cluster as a Precursor"J.Materials Sci.Lett. 20. 491-493 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Dynamics of the Excited State of polysilane Dendrimers : Origin of the Broad Visible Emission of Branched Silicon Chains"J.Phys.Chem.A. 26. 6436-6442 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Origin of Broad Visible Emission from Branched Polysilane and Polygermane Chains"Jpn J.Appl.Phys.. 40. 6457-6463 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Electrical Properties of tert-Butyl-Substituted Germanium Cluster"Chem.Lett.. 1092-1093 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Nanocrystalline Silicon Film Prepared by Laser Annealing of Organosilicon Nanocluster"Jpn.J.Appl.Phys.. 41. L378-L380 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "patially Selective Formation of Microcrystalline Germanium by Laser-Induced Pyrolysis of Organogermanium nanocluster Film"Chem.Lett.. 662-663 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Silicon-germanium alloy prepared by laser-induced pyrolysis of organogermanium nanocluster spin-coated on Si substrate"Materials Letters. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanab: "Optical Properties of Polysilanes with Various Silicon Skeletons"J.Organomett.Chen.. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Watanabe, M.Fujitsuka, and O.Ito: "Micropatterning of SiO_2 Film using Organosilicon Nanocluster as a Precursor"Thin Solid Filrms. 354. 13-18 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.Hendrickx, D.Steenwinckel, A.Persoons, and A.Watanade: "Photorefractive Polysilanes Functionalized with a Nonlinear Optical Chromophore"Macromolecules. 32. 2232-2238 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe: "Material Design beyond the border between Organics and Inorganics"Koubunshi Kakou. 49(6). 251-258 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, and T.Miwa: "Effect of Hydrogen Plasma Treatment on Formation of Amorphous Silicon Film Using Oragnosoluble Silicon Cluster as a Precursor"Jpn.J.Appl.Phys.. 30. L961-L963 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, and T.Miwa: "Silicon-Germanium Alloys Prepared by the Heat-Treatment of Silicon Substrate Spin-Coated with Prgano-Soluble Germanium Cluster"Materials Letters. 89. 89-94 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, T.Miwa: "Preparation of Germanium Thin Film by a Coating Technique Using a Soluble Organogermanium Cluster as a Precursor"J.Materials Sci.Lett.. 20. 491-493 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Nanjo, T.Sunaga, and A.Sekiguchi: "Dynamics of the Excited State of polysilane Dendrimers: Origin of the Broad Visible Emission of Branched Silicon Chains"J.Phys.Chem.A.. 26. 6436-6442 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, T.Sato, and M.Matsuda: "Origin of Broad Visible Emission from Branched Polysilane and Polygermane Chains"Jpn.J.Appl.Phys.. 40. 6457-6463 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, and T.Miwa: "Electrical Properties of tert-Butyl-Substituted Germanium Cluster"Chem.Lett.. 1092-1093 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, F.Hojo, T.Miwa, and M.Wakagi: "Nanocrystalline Silicon Film Prepared by Laser Annealing of Organosilicon Nanocluster"Jpn.J.Appl.Phys.. 41. L378-L380 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, T.Miwa: "Spatially Selective Formation of Microcrystalline Germanium by Laser-Induced Pyrolysis of Organogermanium nanocluster Film"Chem.Lett.. 662-663 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe, M.Unno, F.Hojo, and T.Miwa: "Silicon-germanium alloy prepared by laser-induced pyrolysis of organogermanium nanocluster spin-coated on Si substrate"Materials Letters. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Watanabe: "Optical Properties of Polysilanes with Various Silicon Skeletons"J.Organomett.Chen.. in press. (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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