CVD-grown TiO2 particles as light scattering structures in dye-sensitized solar cells

摘要: Chemical vapour deposition (CVD) at atmospheric pressure, using TiCl4 as a precursor, was used to grow nanostructured TiO2 films on glass substrates. At relatively low temperatures (∼245 °C) and high reactant concentrations, different nano-morphologies of were formed simultaneously, such spheres, nanowires mesoporous structures. The spheres successfully applied light-scattering particles in dye-sensitized solar cells, either by direct onto electrodes the reactor, or preparation printing paste from deposited particles. For cells organic dye D35 sensitizer cobalt-complex based redox electrolyte, cell efficiency 4.4% obtained 5 μm transparent layer. Addition CVD-particle film increased 22% 5.4%, which similar result with an equally thick commercially available (5.3%). Longer electron lifetime found CVD-based films, is attributed presence more traps bulk material.