Controlling the haze ratio with a light condensable layer on working electrodes for dye-sensitized solar cells

Abstract

In dye-sensitized solar cells, the incident light passes through a glass substrate, FTO transparent conducting layer, and then a dye-adsorbed TiO₂ layer. In this process, however, some amount of the light is reflected and/or scattered to be out of the electrode before being absorbed by a dye. In this study, we deposited a light condensable SnO₂ or ZrO₂ layer on the back of the working electrode to increase the haze ratio of the incident light. By controlling the haze ratio, the conversion efficiency of the cell was effectively enhanced as high as 7.6%.