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Control of Photo-Reduction of Zinc Oxide with Piezoelectric Property by Electrical Field

Research Project

Project/Area Number 08650996
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 無機工業化学
Research InstitutionShonan Institute of Technology, Faculty of Engineering

Principal Investigator

FUJITSU Satoru  Shonan Institute of Technology, Associate Prof., 工学部, 助教授 (20165400)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsPiezoelectric / zinc oxide / photo conduction / surface reaction / 圧電体 / 光還元 / 電界
Research Abstract

In the research work, the photo conduction phenomena have been measured for zinc oxide with transparency, crystal c-axis orientation and high resistivity formed by doping of Li_2O.The following results have been obtained, especially for the desorption and reduction of oxygen on the surface which controlled the photo conduction properties mainly.
1) The current acceleration by photo irradiation was observed at the two photo energy region (3.2 and 3.5 eV). From the measurement under the controlled atmosphere, it was confirmed that the former acceleration was due to the electron excitation between the band and the latter was due to the oxygen desorption (reduction) on the surface. The increase and decrease in the resistivity was observed with the switching of the irradiation of the light of 3.5 eV.While the increase in resistivity in dark was not observed in vacuum or nitrogen. The photo reduction and the re-oxidation rate were accelerated and the duplication property was stabilized in the … More high humid atmosphere. The effect of atmosphere under the irradiation of light of 3.2 eV was smaller than that of 3.5 eV.
2) The decrease in the resistivity by photo reduction wa depressed by the grinding the surface mechanically. This change was restored by heating the sample at 600゚C in air. The XPS measurement showed the coating by OH on the surface of the ground sample, which should restrict the oxygen desorption.
3) The photo excitation in the current under the constant bias along the c-axis was larger than that along the other direction and this excitation depended on the applied bias. The larger excitation was observed under the larger applied bias. Such dependence was not observed in the measurement for the bias applying on the other direction. Since the c-axis of zinc oxide is a piezoelectric polarizing direction, it has been judged that the binding condition of oxygen in the surface changed by piezoelectric lattice distortion with the electrical field.
From these results, it was confirmed that we could control the photo reduction process on the surface of piezoelectric zinc oxide by applying electrical field. Less

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] M.Nakazawa et.al.: "Measurement of Two-Phton Absorption Coetlicient of Transparnt Polycrystalline Linc Oyide with C-Aris Oriontat" J.Cerom.Soc.Jpn.104. 918-21 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu et al.: "The Energy Barrier at the Interface of Zno Cotact" Pro C.Ceramic Microstructure 96. 689-96 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 藤津 悟, 渡辺 祐一: "酸化亜鉛の配向性制御と光学的機能" セラミック. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Milozuihi et al: "Charge Transfer Bmd Observed in B・smuth Mixed-Valance Oxides, Bi_<1-X> Yx _<1.5+6>(x=0.3)" Solid State Comnunications. 104. 705-8 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu et al.: "Nitriding of Zirconia by I radiation with Nd :YAG Laser Beam" Mat.Res.Symp.Proc.397. 561-5 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu et al: " Alumina Joining Using CuO-Al_2O_3-SiO_2 Glasseg" Proc.Int Symp.Ceron.Mat.Conp.for Engine. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Nakazawa, Y.Watanabe, T.Tsuchiya and S.Fujitsu: "Measurement of Two-Photon Absorption Coefficient of Transparent Polycrystalline Zinc Oxide with c-Axis Orientation" J.Ceram.Soc.Jpn.104. 918-21 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu, K.Nakanishi, S.Hidaka and Y.Awakura: "The Energy Barrier at the Interface of ZnO Contact" Proc.Ceramic Microstructure 96, Prenum. 689-96 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Mizoguchi, T.Omata, H.Kawazoe, S.Fujitsu, H.Hosono and N.Ueda: "Formation of Valence Band Structure of TlAlF_4" J.Phys : Condens.Matter.8. L303-12 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Omata, H.Ikawa, S.Fujitsu, N.Ueda, H.Hosono and H.Kawazoe: "Optical Absorption Spectra and the Nature of Conduction Carriers of Hole-Doped Sr_<1+x>La_<1-x>FeO_4" Solid State Comm.97. 411-5 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Mizoguchi, K.Ueda, H.Kawazoe, T.Omata and S.Fujitsu: "New Mexed-Valence Oxides of Bismuth : Bi_<1-x>Y_xO_<1.5+delta> (x=0.4)" J.Mater.Chem.943-6 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Mizoguchi, H.Kawazoe, H.Hosono and S.Fujitsu: "Charge Transfer Band Observed In Bismuth Mixed-Valence Oxides Bi_<1-x>Y_xO_<1.5+delta> (x=0.3)" Solid State Comm.104. 705-8 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu, M.Sawai, K.Kawamura and H.Hosono: "Nitriding of Zirconia by Irradiation with Nd : YAG Laser Beam" Mat.Res.Soc.Symp.Proc.397. 561-5 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu, K.Yamagiwa, E.Saiz and A.P.Tomsia: "Alumina Joining by CaO-Al_2O_3-SiO_2 Glass" Proc.6th International Symposium on Ceramic Materials and Components for Engine. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujitsu and Y,Watanabe: "Control of Crystal Axis Orientation and Optical characteristics of Zinc Oxide" Bull.Ceram.Soc.Jpn.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Nakazawa: "Heasurement of Two-Photon Absorption CoeAicient of Transparent polycrystalline zinc Oxide with C-Axis Oriantation." J.Cerara.Soc.Jpn.104. 918-21 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujitsu et al.: "The Energy Burrier at the Interface of ZnO Contanct" Proc.Ceramic Microstructure 96. 689-96 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤津 悟,渡辺裕一: "酸化亜鉛の配向性制御と光学的機能" セラミック. (印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Mizoguchi et al.: "Change Transfer Band Observed in Bismuth Mixed-Valence Oxides,Bi_<1-x>Y_xO_<1.5+s> (x=0.3)" Solid State Communication. 104. 705-8 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujitsu et al.: "Nitriding of zirconia by Irradiation with Nd:YAG Laser Beam" Mat,Res,Symp,Proc. 397. 561-5 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujitsu et al.: "Alumina Joining Using CaO-Al_2O_3-SiO_2 Glasses" Proc.Int.Symp.Ceran.Mat.Conp.for Engines. (印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Nakazawa,Y.Watanabe,T.Tsuchiya,S Fujitsu: "Measurement of Two-Photon Absorption Coe fficient of Transparent Polycrystalline Zinc Oxide with C-Axis Orientation" J.Ceram.Soc.Jpn.104(10). 918-921 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Omata,H.Ikawa,S.Fujitsu,N.Veda他: "Optical Absorption Spectra and the Nature of Conduction Carriers of Hole-doped SrHx Lax FeO_4" Solid State Comm.97・5. 411-415 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Fujitsu,M.Sawai,K.Kawamura,H.Hosono: "Nitriding of Zirconia by Irradiation with Nd:YAG Laser Beam" Mat.Res.Soc.Symp.Proc.397. 561-565 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Mizoguchi,T.Omata,H.Kawazoe,S.Fujitsu他: "Formation of Valenco Band Structure of TlAlF_4" J.Phys.Cordens.Matter. 8. 303-312 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Fujitsu,K.Nakanishi,S.Hidaka,Y.Awakura: "The Energy Barrier at the Interface of 2nO Contact" Proc.Ceramic Microstructure 96. (印刷中).

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Fujitsu,K.Yamagiwa,E.Saiz,A.P.Tomsia: "Joining of Alumina Ceramics by Refractory Glasses" Acta Metallurgica et Materialia. (印刷中).

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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