The influence of the nanostructures on the dye adsorption in dye sensitized solar cell

Abstract

In this work, ZnO nanostructures were synthesized by two distinct routes, which consisted in grow distinct morphologies on a seed layer by Chemical Bath Deposition method (CBD) using zinc acetate dihydrate, zinc chloride, zinc sulfate heptahydrate and zinc nitrate hexahydrate as precursor solutions and Ethylenediaminetetraacetic Acid (EDTA) and ammonium chloride as complex agents. The dye Eosin Y salt was adsorbed on the ZnO nanostructures using electrophoresis. The nanostructures were characterized by Scanning Electron Microscopy (SEM), X-ray Fluorescence (XRF) and X-ray Diffraction (XRD). The amount of dye adsorbed on the film surface was evaluated by UV-vis spectrophotometry. The nanostructure prepared from the ZnAc solution presented the higher concentration of dye.