Influence of TiO surface defects on the adsorption of N719 dye molecules.

Surface defects influence the dye adsorption on TiO used as a substrate in dye-sensitized solar cells (DSSCs). In this study, we have used different Ar sputtering doses to create a controlled density of defects on a TiO surface exposed to different pre-heating temperatures in order to analyse the influence of defects on the N719 dye adsorption. TiO was pre-treated using two different treatments.