Au-Loaded Titanium Dioxide Nanoparticles Synthesized by Modified Sol-Gel/Impregnation Methods and Their Application to Dye-Sensitized Solar Cells

Abstract

Au-loaded TiO 2 nanoparticles were synthesized by the modified sol-gel method together with the impregnation method. Anatase phase of TiO 2 was obtained in all samples with an average particle size of 20 nm. For the enhancement of DSSCs, the dye-sensitized solar cells composed of the ITO/Au-loaded TiO 2 /N-719/electrolyte/Pt were fabricated. Au-loaded TiO 2 films were deposited by using squeegee method. Finally, the fabricated cells were studied upon an irradiation of solar light to study the performance. The fabricated cell with up to 1.0 mol% Au-loaded TiO 2 could enhance the performance by localized surface plasmon effect and scattering property.