Method for preparing SiO2-modified ZnO nano-porous thin film composite electrode

• Main Authors: LIAO QINGLIANG, ZHANG YUE, HUANG YUNHUA, QIN ZI
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2012
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention belongs to the technical field of nano-materials, and relates to a method for preparing a SiO2-modified ZnO nano-porous thin film composite electrode, which is characterized in that a ZnO nano-particle porous thin film is used as the base layer of the composite electrode; a spin-coated silicon oxide sol protective layer is selected to improve the corrosion resistance of the ZnO nano-particle porous thin film in an acid dye for the stability of a dye-sensitized solar cell. The coating layer number, the sintering time and the concentration of sole are adjusted so as to reasonably control the thickness of a silicon oxide thin film coat, thereby obtaining the composite electrode with strong corrosion resistance and excellent performance. In the invention, process parameters can be adjusted according to different sensitized conditions so as to obtain the SiO2-ZnO nanoparticle porous thin film composite electrode with strong acid resistance in the process of sensitization and optimal electrode perform