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Structure control of semiconductor hetero-ineterfaces utilizing 'hydrogen atom' as mediators

Research Project

Project/Area Number 09305002
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

SHIMIZU Isamu  Interdisciplinary Graduate School of Science and Engineering, Professor, 大学院・総合理工学研究科, 教授 (40016522)

Co-Investigator(Kenkyū-buntansha) KAMIYA Toshio  Material Structures Laboratory, Research associate, 応用セラミックス研究所, 助手 (80233956)
FORTMANN C.M.  Interdisciplinary Graduate School of Science and Engineering, Professor, 大学院・総合理工学研究科, 教授 (70293066)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥30,900,000 (Direct Cost: ¥30,900,000)
Fiscal Year 1999: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1998: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1997: ¥27,500,000 (Direct Cost: ¥27,500,000)
Keywordsatomic hydrogen / structure control / high mobility / VHF plasma / SiFィイD24ィエD2 / solar cell / 多結晶シリコン薄膜 / II-VI半導体薄膜 / 半導体ヘテロ成長 / 水素原子メディエータ / 表面反応制御 / 二段階成長法 / layer-by-layer法 / 分光エリプソメトリーその場観察法
Research Abstract

This work focused on the development of new technique to prepare high quality semiconductor materials with the assistance of hydrogen atoms. In our previous studies, it was confirmed that high flux hydrogen atoms generated by plasma affected on structure and property of semiconductors such as II-VI compound Zn(S,Se) and polycrystalline silicon.
We made a VHF plasma CVD apparatus which had two deposition chambers connected with a gate-valve by way of an experiment to investigate the way to prepare high quality semiconductors and their hetero-interfaces. We confirmed that high quality, high crystallinity polycrystalline silicon (poly-Si) could be prepared on glass at temperatures lower than 400℃ by using SiFィイD24ィエD2 and HィイD22ィエD2 mixing gas. It should be noted that an interesting result was obtained : i.e., orientation structure of poly-Si were controlled by selecting appropriate SiFィイD24ィエD2/HィイD22ィエD2 gas ratio : i.e., (220) orietated poly-Si were grown at small SiFィイD24ィエD2/HィイD22ィエD … More 2 ratio conditions while (400) oriented poly-Si were grown at larger SiFィイD24ィエD2/HィイD22ィエD2 ratios. Especially, the preparation of (400) oriented poly-Si on glass at low temperatures < 400℃ has been very difficult subject until this study and they showed very excellent structural and transport properties. These features let us expect that the (400) oriented poly-Si are promising materials for high operation speed TFTs. Also it was confirmed that rather high crystal fraction (83%) poly-Si were prepared at rather low temperatures of >150℃ and very small addition of SiHィイD24ィエD2 to source gas effectively increased growth rate by promoting gaseous reaction in plasma.
From the investigation for growth mechanism of these preferentially oriented poly-Si, we obtained detailed relationship between growth rate, film structure, SiFィイD24ィエD2/HィイD22ィエD2 ratio and growth temperature. It was found that very surface sensitive growth is occurred under the deposition condition Where (400) oriented poly-Si are grown : especially, deposition precursors have very strong selectivity for sticking to Si 100 surface. Also selective etching of specific crystallographic plane was observed at near this condition. These results indicate that (400) preferential growth is determined by the balance between selective sticking of precursors and selective etching of specific planes. Less

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] T. Kamiya, K. Nakahata, K. Ro, C. M. Fortmann, I. Shimizu: "High rates and very low temperature fabrication of polycrystalline silicon from fluorinated source gas and their transport properties"to be published in Mat. Res. Soc. Symp. Proc.. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Nakahata, K. Ro, J. Tohti, C. Fortmann, I. Shimizu: "Structure Control of Polycrystalline Silicon Films on Glass Substrates and their properties"Key Eng. Mater.. 169-170. 171-174 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 神谷利夫,前田佳輝,中畑浩一,小丸貴史,C.M.Fortmann,清水勇: "ガラス上に低温成長させた多結晶シリコン薄膜の構造に与えるハロゲンの影響"J.Ceram.Soc.Jpn.. 107. 1099-1104 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Nakahata, K. Ro, C. M. Fortmann, I. Shimizu: "Comparison of Microstructure and Crystal Structure of Polycrystalline silicon Exhibiting Varied Textures Fabricated by Microwave and Very High Frequency"Jpn. J. Appl. Phys.. 38. 5750-5756 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Ro, C. M. Fortmann, I. Shimizu: "Role of Seed Crystal Layer in Two-Step-Grown Procedure for Low Temperature Growth of Polycrystalline Silicon Thin Film from SiF4 by a Remote-Type..."Jpn. J. Appl. Phys.. 38. 5762-5767 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A. Suemasu, K. Nakahata, K. Ro, T. Kamiya, Fortmann and I. Shimizu: "In-Situ hydrogen plasma treatment for improved transport of (400) oriented polycrystalline silicon films ; submitted"Technical digest of 11th Int. Photovoltaic Science and Engineering Conf.. 787-788 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Nakahata, K. Ro, C. M. Fortmann, I. Shimizu: "High rates and very low temperature fabrication of polycrystalline silicon from fluorinated source gas and their transport properties"to be published in Mat. Res. Soc. Symp. Proc.. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Nakahata, K. Ro, J. Tohhi, C. Fortmann, I. Shimizu: "Structure Control of Polycrystalline Silicon Films on Glass Substrates and their properties"Key Eng. Mater.. 169-170. 171-174 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Nakahata, K. Ro, C. M. Fortmann, I. Shimizu: "Comparison of Microstructure and Crystal Structure of Polycrystalline Silicon Exhibiting Varied Textures Fabricated by Microwave and Very High Frequency"Jpn. J. Appl. Phys.. 38. 5750-5756 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Kamiya, K. Ro, C. M. Fortmann, I. Shimizu: "Role of Seed Crystal Layer in Two-Step-Growth Procedure for Low Temperature Growth of Polycrystalline Silicon Thin Film from SiF4 by a Remote-Type"Jpn. J. Appl. Phys.. 38. 5762-5767 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A. Suemasu, K. Nakahata, K. Ro, T. Kamiya, Fortmann and I. Shimizu: "In-Situ hydrogen plasma treatment for improved transport of (400 oriented polycrystalline silicon films; submitted"Technical digest of 11th Int. Photovoltaic Science and Engineering Conf.. 787-788 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Kamiya,K.Nakahata,K.Ro,C.M.Fortmann,I.Simizu: "High rates and very low temperature fabrication of polycrystalline silicon from fluorinated source gas and their transport properties"to be published in Mat. Res. Soc. Symp. Proc.. (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Toshio Kamiya,Kouichi Nakahata,K.Ro Jurat Tohti,C.M.Fortmann,I.Shimizu: "Structure Control of Polycrystalline Silicon Films on Glass Substrates and their properties"Key Eng. Mater.. 169-170. 171-174 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 神谷利夫、前田佳輝、中畑浩一、小丸貴史、C.M.Fortmann,清水勇: "ガラス上に低温成長させた多結晶シリコン薄膜の構造に与えるハロゲンの影響"J. Ceram. Soc. Jpn.. 107. 1099-1104 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Kamiya,K.Nakahata,K.Ro,C.M.Fortmann,I.Simizu: "Comparison of Microstructure and Crystal Structure of Polycrystalline Silicon Exhibiting Varied Textures Fabricated by Microwave and Very High Frequency"Jpn. J. Appl. Phys.. 38. 5750-5756 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Kamiya,K.Ro,C.M.Fortmann,I.Simizu: "Role of Seed Crystal Layer in Two-Step-Growth Procedure for Low Temperature Growth of Polycrystallin Silicon Thin Film from SiF4 by a Remote-Type"Jpn. J. Appl. Phys.. 38. 5762-5767 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A.Suemasu,K.Nakahata,K.Ro,T.Kamiya,C.M.Fortmann and I.Simizu: "In-Situ hydrogen plasma treatment for improved tansport of (400) oriented polycrystalline silicon films; submitted"Technical digest of 11th Int. Photovoltaic Science and Engineering Conf.. 787-788 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Nakahata,A.Miida,T.Kamiya,Y.Maeda,C.M.Fortmann,I.Shimizu: "Control of Orientation for Polycrystalline Silicon Thin Films Fabricated from Fluorinated Source Gas" Jpn.J.Appl.Phys.Lett.37. L1026-L1029 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Kamiya,K.Nakahata,A.Miida,C.M.Fortmann,I.Shimizu: "Control of Orientation from Random to(220)or(400)in Polycrystalline Silicon Films" Thin Solid Films. (in press). (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Nakahata,T.Kamiya,A.Miida,C.M.Fortmann,I.Shimizu: "Carrier Transport,Structure and Orientation in Polycrystalline Silicon on Glass" Thin Solid Films. (in press). (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Kamiya,K.Nakahata,K.Ro,J.Tohti,C.M.Fortmann,I.Shimizu: "Structure control of polycrystalline silicon films on glass substrates and their properties" Electroceramics in Japan II. (to be published). (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tetsuya Akasaka, Dyane He, Yusuke Miyamoto. et al.: "Growth of polycrystalline sillicon thin films on glass" Thin Solid Films. 296. 2-6 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Hiroyuki Fujiwara, Toshihiro II and Isamu Shimizu: "Compositional modulation and its optoelectric properties of Zn(S, Se, Te)crystals grown by hydrogen radical-enhanced CVD" Mat. Res. Soc. Symp. Proc.235-255 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Yoshino, W.Futako, Y.Wasai and I.Shimizu: "Wide-gap a-Si : H fabricated by controlling voids" Mat. Res. Soc. Symp. Proc.47. 235-240 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Miyamoto, A.Miida and I.Shiizu: "Epitaxy-like growth of polycrystalline silicon on the seed crystallites grown on glass" Mat. Res. Soc.. Smp. Proc.452. 995-1000 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] W. Futako and I. Shimizu: "Modulation of growing surface with atomic hydrogen and excited argon to fabricate narrow gap a-Si. H" Mat. Res. Soc. Symp. Proc.420. 431-436 (1996)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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