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1994 Fiscal Year Final Research Report Summary

Development of Novel functionalities in Some Photoelectrochromic Materials and their Application to a Display Device

Research Project

Project/Area Number 04505004
Research Category

Grant-in-Aid for Developmental Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 工業物理化学・複合材料
Research InstitutionThe University of Tokyo

Principal Investigator

FUJISHIMA Akira  Faculty of Engineering, University of Tokyo : Professor, 工学部, 教授 (30078307)

Co-Investigator(Kenkyū-buntansha) ISHIDA Yutaka  Nippon Paint Co., Center Research Institute : Chief Researcher, 中央研究所, 主席研究員
KOBAYAKAWA Koichi  Faculty of Engineering, Kanagawa University : Assistant, 工学部, 助手 (40078332)
SATO Yuichi  Faculty of Engineering, Kanagawa University : Professor, 工学部, 教授 (20201535)
BABA Ryo  Faculty of Engineering, University of Tokyo : Assistant, 工学部, 助手 (70198951)
Project Period (FY) 1992 – 1994
Keywordsphotochromism / electrochromism / mechanism / fine patterning / dual mode / metal oxide semiconductors / thin films
Research Abstract

Based on the opto-electric functionalities of some metal oxide semiconductors which we had discovered in the course of the study of photoresponsible novel materials, the possibility of these materials for display or memory devices has been investigated from the practical point of view. Although the electrochromism (EC) and the photochromism (PC) of those metal oxides such as WO3 and MoO3 were already established, it has been simply assumed that the PC response is induced by the UV light of larger energy than the bandgaps of these semiconductor materials. On the contrary, we found that these compounds will exhibit PC reponse even to a visible light once they are treated electro-chemically in advance. This discovery led us successfully to further findings of the prac-tical importance ; the PC reaction of these metal oxides can be induced by the red beam of a tiny semiconductor laser system, their PC coloration is readily erasable upon anodic polarization, and these coloration-decoloratio … More n processes are highly reproducible. The reaction mechanism concerning this hybridized PC-EC response of these semiconductor materials were also studid in terms of a variety of spectroscopic approaches and kinetic analyzes.
The purpose of the present research project is to achieve the guide-lines for the reali-zation of high density display devices or laser-printers of lower-cost and higher recyclabil-ity by utilizing the hybridized PC-EC properties of those metal oxides mentioned above. The project for the last 3 years was highly effective and many useful results in fundamen-tal to applicational aspects were obtained under the collaboration with the researcher of a private company, especially in the study of manufacturing processes in which the faculty researchers are not necesarily well-experienced.
The items accomplished in each research year are :
'92 ; basic characterization of PC-EC compounds, the response and the mechanism.
'93 ; optimization of the PC-EC process, multiple control of the process.
'94 ; repeatability test of write-erase cycles, processability of micro-patterned PC-EC film. Less

  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials.--Part 1.The Effect of Hydrogen Absorption on the Electrocchemical Behavior on Palladium Electrodes" J.Electroanal.Chem. 345. 445-456 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Z.F.Liu: "Direct Observation of the Secondary Structure of Unfolded Pseudomonas-Cytochrome C551 by Scanning Tunneling Mictroscopy" Surface Science Lett.284. L411-L415 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Amemiya: "Frequency-Resolved Faradaic Processes in Polypyrrole Films Observed by Electromodulation Techniques:Electrochemical Impedance and Color Impedance Spectroscopies" J.Phys.Chem. 97. 4187-4191 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Amemiya: "Dynamics of Faradaic Processed in Polypyrrole/Polystyrenesulfonate Composite Films in the Presence and Absence of a Redox Species in Aqueous Solutions" J.Phys.Chem.97. 4192-4195 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reductions of Carbon Dioxide on Hydrogenstoring Materials.--Part II,Copper-Modified Palladium Electrode" J.Electroanal.Chem.384. 459-464 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] O.Sato: "Self-Ordered Film of Hemicyanine Derivative Characterizedby Phase-Sensitive Optical Second-Harmonic Generation" Jpn.J.Appl.Phys.,. 32,Part1. 1201-1203 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.A.Nagahara: "Effects of HF Solution in the Electroless Deposition Process on Silicon Surfaces" J.Vac.Sci.Technol.A,. 11. 763-767 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials.--Part3.The Effect of the Absorption of Hydrogen on the Palladium Electrodes Modified with Copper" J.Electroanal.Chem.369. 165-173 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials:--Part4.Electrochemical Behavior of the Pd Electrode in Aqueous and Nonaqueous Electrolyte" J.Electroanal.Chem.369. 247-250 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Fujishima: "Thin Semiconductor Films:Photoeffects and New Applications" Electrochem.Acta. 39. 1229-1236 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Yoshiki: "Electroless Copper Plating Using ZnO Thin Film Coated on a Glass Substrate" J.Electrochem.Soc.141. L56-L58 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Yano: "Observation and Surfaces Modificationof Electropolymerized Poly(N-Methylpyrrole)Using Atomic Force Microscopy" J.Vac.Sci.Technol.B. 12. 1596-1599 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.A.Nagahara: "Mica Etch Pits as a Height Calibration Source for Atomic Force Microscopy" J.Vac.Sci.Technol.B. 12. 1694-1697 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] O.Sato: "A Novel Approach to the Polydiacetylene Langmuir-Blodegett Film by the Surface-Specific Optical Third Harmonic Generation Based on the Angular Momentum Conservation Rule." J.Electroanal.Chem.372. 279-281 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Jin-Fang Zhi: "Conjugated Molecular System of Photochromism and Electrochromism.Photoelectrochemical Behavier of Nitrospirobenzopyran at Low Temperature" Chem.Lett.1521-1524 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.Jiang,: "Surface Photovoltage Spectroscopy and Mapping by Atomic Force Microscopy" Chem.Lett.1975-1978 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Saeki: "Electrochemical Reduction of Liquid CO_2.--Drastic Enhancement of Current Density---" J.Electrochem.Soc.,. 141. L130-L132 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Sakai: "IntracellularCa^<2+> Concentration Change of T24 Cell Under Irradiation in the Presence of TiO_2 Ultrafine Particles" Biochim.Biophys. Acta,. 1201. 259-265 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials.-Part1.The Effect of Hydrogen Absorption on the Electrocchemical Behavior on Palladiu Electrodes" J.Electroanal.Chem.345. 445-456 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Z.F.Liu: "Direct Observation of the Secondary Structure of Unfolded Pseudomonas-Cytochrome C551 by Scanning Tunneling Mictroscopy" Surface Science Lett.284. L411-L415 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Amemiya: "Frequency-Resolved Faradaic Processes in Polypyrrole Films Observed by Electromodulation Techniques : Electrochemical Impedance and Color Impedance Spectroscopies" J.Phys.Chem. 97. 4187-41191 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Amemiya: "Dynamics of Faradaic Processed in Polypyrrole/Polystirenesulfonate Composite Films in the Presence and Absence of a Redox Species in Aqueous Solutions" J.Phys.Chem.97 (16). 4192-4195 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reductions of Carbon Dioxide on Hydrogn-storing Materials.-PartII,Copper-Modified Palladium Electrode" J.Electroanal.Chem.348. 459-464 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] O.Sato: "Self-Ordered Film of Hemicyanine Derivative Characterized by Phase-Sensitive Optical Second-Harmonic Generation" Jpn.J.Appl.Phys.32, Part1 (3A). 1201-1203 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.A.Nagahara: "Effects of HF Solution in the Electroless Deposition Process on Silicon Surfaces" J.Vac.Sci.Technol.A,11 (4). 763-767 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials. -Part3. The Effect of the Absorption of Hydrogen on the Palladium Electrodes Modified with Copper" J.Electroanal.Chem.369. 165-173 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ohkawa: "Electrochemical Reduction of Carbon Dioxide on Hydrogen-storing Materials : -Part4. Electrochemical Behavior of the Pd Electrode in Aqueous and Nonaqueous Electrolyte" J.Electroanal.Chem.369. 247-250 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Fujihima: "Thin Semiconductor Films : Photoeffects and New Applications" Electrochem.Acta. 39 (8/9). 1229-1236 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Yoshiki: "Electroless Copper Plating Using ZnO Thin Film Coated J.on a Glass Substrate" Electrochem.Soc.141 (5). L56-L58 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Yano: "Observation and Surfaces Modification of Electropolymerized Poly (N-Methylpyrrole) Using Atomic Force Microscopy" J.Vac.Sci.Technol.B,12 (3). 1596-1599 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.A.Nagahara: "Mica Etch Pits as a Height Calibration Source for Atomic Force Microscopy" J.Vac.Sci.Technol.B. 12(3). 1694-1697 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] O.Sato: "A Novel Approach to the Polydiacetylene Langmuir-Blodegett Film by the Surface-Specific Optical Third Harmonic Genedration Based on the Angular Momentum Conservation Rule." J.Electroanal.Chem.372. 279-281 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Jin-Fang Zhi: "Conjugated Molecular System of Photochromism and Electrochromism.Photoelectrochemical Behavier of Nitrospirobenzopyran at Low Temperature" Chem.Lett.1521-1524 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.Jiang: "Surface Photovoltage Spectroscopy and Mapping by Atomic Force Microscopy" Chem.Lett.1975-1978 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Saeki: "Electrochemical Reduction of Liquid CO2.-Drastic Enhancement of Current Density-" J.Electrochem.Soc.141 (9). L130-L132 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Sakai: "Intracellular Ca^<2+> Concentration Change of T24 Cell Under Irradiation in the Presence of TiO2 Ultrafine Particles" Biochim.Biophys.Acta. 1201. 259-265 (1994)

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

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Published: 1996-04-15  

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