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Preparation and Application of New Amorphous Materials in Non-chalcogenide System

Research Project

Project/Area Number 62470062
Research Category

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

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionNagoya Institute of Technology

Principal Investigator

ABE Yoshihiro  Nagoya Institute of Tech. Prof., 工学部, 教授 (90024223)

Co-Investigator(Kenkyū-buntansha) YAMASHITA Kimihito  Tokyo Metropol. Univ. Res. Assoc., 工学部, 助手 (70174670)
HOSONO Hideo  Nagoya Institute of Tech. Res. Assoc., 工学部, 助手 (30157028)
MAEDA Masunobu  Nagoya Institute of Tech. Assoc. Prof., 工学部, 助教授 (40016580)
阿部 良弘  名古屋工業大学, 工学部, 教授 (90024223)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥7,300,000 (Direct Cost: ¥7,300,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1987: ¥6,000,000 (Direct Cost: ¥6,000,000)
Keywordsamorphous / glass / photosensitivity / phosphorus / calcium aluminate / photochromism / photodarkening / photodoping / リン / アモルファス赤リン / 光暗化 / 光退色 / ブリーチング / CaOーAl_2O_3ガラス / PーSガラス / Fーセンター / アモルファス材料 / 感光材料 / アモルフェスリン / カルシウムアルミネート / フォトダークニング / 光メモリー
Research Abstract

Two new photosensitive amorphous materials were found in non- chalcogenide systems; dopant-free calcium aluminate glasses and amorphous red phosphorus.
Binary calcium aluminate glasses show two types of photosensitivities with different nature to ultravioletradiation, stable coloring( bleachable by heating tip to 200゚C) and photochromism. No doping of optically active components such as Au, Ag or halogens is required for the appearance, which is totally differs from photosensitive glasses so far. These insensitivities can be imparted to calcium aluminate glasses with the same chemical compositions by only changing the melting atmosphere such as oxidizing or reducing. These sensitivities were attributed to the presence of oxygen-related point defects (oxygen-excess type or oxygen vacancy) in the glasses.
Amorphous red phosphorus films were successfully prepared by rf sputtering method. These films were found to show three photoinduced phenomena, photodarkening, and photodoping of silver.
These observation is the fist report in non-chacogenide systems.
Further, photobleaching was found, which has been not observed in chacogenide systems so far. The results were explained by that the top of the valence band is composed of p sigina orbital,i.e.
band gap illumination dissociates P-P bonds. The resulting P_2 molecule or P radicals rearrange or react with oxygen molecule, depending on the atmosphere. No such a photo-induced bond dissociation is observed because the lone pair orbitals occupy the top of the valence band in chacogenides.

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 川島孝一: "アモルファス赤リンの光ブリ-チング機構" 日本セラミックス協会学術論文誌. 97. 351-54 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] H.Hosono: "Properties and Mechanism of Photochromism in Reduced Calcium Aluminate Glasses" Journal of Applied Physics(印刷中). (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] K.Kawashima: "Light-Induced Optical Changes in Amorphous Red Phosphoros" Journal of Non-Crystalline Solids. 95-6. 741-748 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] K.Kawashima: "Electrical Properties of Silver-Photodoped Amorphous Red Phosphorus" Phosphorus and Sulphur. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 川島孝一: "還元リン酸塩ガラスの熱着色" 日本セラミックス協会学術論文誌. 97. 823-27 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Hosono: "Photosensitive Characteristics of Dopant-Free,UV-Sensitive Calcium Aluminate Glasses" Journal of American Ceramic Society. 70. 867-70 (1987)

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Hosono: "Photo chromism of Reduced Calcium Aluminate Glasses" Materials Research Bulletin. 23. 171-76 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] H.Hosono: "Properties and Mechanism of Photochromism in Reduced Calcium Aluminate Glasses" Journal of Applied Physics. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 川島孝一,細野秀雄,阿部良弘: 日本セラミックス協会学術論文誌. 97. 346-350 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 川島孝一,細野秀雄,阿部良弘: 日本セラミックス協会学術論文誌. 97. 351-354 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] K.KAWASHIMA et al.: Journal of Non-Crystalline Solids. 95 & 6. 741-748 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] H.HOSONO et al.: Journal of American Ceramic Society. 70. 867-870 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] H.HOSONO et al.: Journal of Non-Crystalline Solids. 95 & 6. 717-724 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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