Effect of Binder Concentration and Dye Loading Time on Titania Based Photoanode in Dye Sensitized Solar Cell Application
Abstract
The effect of binder concentration and dye loading time on theTiO2/N3 based dye sensitized solar cell (DSSC) has been studied. Photoanodes for DSSCs were fabricated using the commercially purchased TiO2 P25 (Degussa powder) nanoparticles and N3 dye. Two parameters are studied in this article. Firstly, the binder concentration affects the interconnectivity of TiO2 nanoparticles. The other parameter studied is dye loading time. When the TiO2 photoanode is exposed to a prolonged dye adsorption time, significant change is observed in the cell performance. The study correlates the change in open-circuit voltage (VOC) and short-circuit density (JSC) as the function of the dye adsorption time and reports the at-rest stability of the best-performing cell. The highest efficiency obtained in this study is 5%. The chronoamperometry study gives the stability of the generated photocurrent and the chronopotentiometry study determines the photovoltage stability of the device during the illumination period.