AqueousBased Pastefor Fabrication of Mesoporous Composite Anatase-Rutile TiO2 Nanoparticle Thin Film

An efficient method using a polymer dispersion based on a copolymer of methyl methacrylate and butyl acrylate to prepare TiO2 electrodes for Dye-Sensitized solar cells was introduced. A 30/70 mixture of methyl methacrylate/butyl acrylate monomers was emulsion polymerized and added toa suspension of appropriate amount of TiO2, water and additives.The paste was then casted on glass slides by doctor blading technique. The resulting paste’s viscosity was investigated by coaxial rheometer. Scanning electron microscopy (SEM) was used to observe the morphology of the resulting thin films.Results showed a porous structure with pore size distribution from tens of nanometers to several hundred nanometers or even micrometers. It offered a film with high haze factor and porosity