Method for forming nanocrystalline rutile titanium dioxide film and dye-sensitized nanocrystalline titanium dioxide solar cell by using rutile titanium dioxide slurry

摘要

The present invention relates to the production of dye-sensitized solar cells using nanoparticles of rutile titanium oxide (TiO ₂ ), to obtain titanium oxide powder having a rutile structure by hydrolyzing titanium tetrachloride (TiCl ₄ ) at room temperature. Redispersed in an aqueous solution in which ethylene oxide and poly ethylene glycol are mixed, coated on a transparent conductive glass substrate doped with fluorine, and then heat-treated in air to obtain a thickness of 10 μm to 12 μm. A crack-free rutile titanium oxide thick film was prepared, and a heat treated film was impregnated in a solution containing ruthenium-based dye molecules to prepare a rutile titanium oxide electrode in which dye molecules were adsorbed onto an oxide surface. By bonding to a platinum (Pt) thin film electrode, and then capillary action to iodine-based redox liquid electrolyte between the two electrodes The implanted to produce a solar cell. Accordingly, it is possible to use the nanoparticle rutile titanium oxide thick film without cracks as the electrode of the dye-sensitized solar cell, thereby reducing the manufacturing cost of the solar cell.