Effect of Current Density on the Absorption of Semiconducting Dye Using Electrodeposition Technique for DSSC Application

Electrodeposition of nano titania from aqueous dispersion has been studied. Properties of The electrodeposited layer are related to nanoparticle type, morphology, structure and process characteristics. These properties are directly affected by preparation method and electrodeposition parameters such as current density, substrate type, pH, ionic concentration, size, type of nanoparticles, electrolyte mixing, etc. Characteristics of nano titania could affect the conversion efficiency of DSSC (Dye Sensitized Solar Cell) significantly. Electrodeposition is a good candidate for applying nano titania as a semi-conductor. In this study the effect of electrodeposition current density on the adsorption of different types of dyes on electrodeposited nano titania in a DSSC has been studied. N455-PF6 showed more dye adsorption on the electrodeposited nano titania. The increasing current density, the raising nano titania thickness and deposition yield. Comparing three types of dyes (P1, N455-PF6, N719) showed that N455-PF6 represented a linear and reproducible absorption by increasing current density.