Metal oxide dispersion and photoactive electrode for dye-sensitized solar cell, and dye-sensitized solar cell

• Main Authors: MUROFUSHI KATSUMI, SATO RYUSUKE, KONDO KUNIO
• Format: Patent
• Language: English
• Published: 08.04.2004
• Edition: 7
• 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; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SEMICONDUCTOR DEVICES

(1) A metal oxide dispersion for a dye-sensitized solar cell, which contains metal oxide fine particles, a binder composed of a polymer compound having an action to bind to the fine particles and a solvent; (2) a method for producing a photoactive electrode for a dye-sensitized solar cell by coating a dispersion containing the above-mentioned binder and metal oxide fine particles on a sheet-shaped electrode; (3) a photoactive electrode for a dye-sensitized solar cell, obtained by the method, which electrode has metal oxide containing the above-mentioned binder and metal oxide fine particles; and (4) a dye-sensitized solar cell with the above-mentioned photoactive electrode. According to the present invention, a porous metal oxide film can be formed without performing sintering at high temperatures, so that a flexible, inexpensive dye-sensitized solar cell can be obtained in which a resin material which has high transparency, is inexpensive and light in weight and has freedom in shape can be used as a sheet-shaped electrode substrate.