Partially dyed-TiO2 dispersions for adaptation to the continuous fabrication of photoanodes

A new fabrication method of photoanodes for dye-sensitized solar cells (DSCs) is proposed using partially N3-dyed-TiO2 nanoparticle dispersions. The photoanode fabrication method presented here is contrasted with a conventional low-temperature compression process, in that a time-consuming dye-adsorption step can be omitted, making DSCs more adaptable to a continuous printing process. The effects of the amount of dye-loadings, the degree of compression, and the film thickness on photovoltaic performances were examined. All processes were conducted at room temperature. The optimized film composed of partially dyed-TiO2 led to sufficient interparticle connections to reach a power conversion efficiency of 5.0% under 100 mW cm−2 AM1.5 illumination.