Effect of Performance in Dye-sensitized Solar Cells by PEG Contents

A solar cell based on dye-sensitized photoelectric conversion was studied by investigating the effects of the amount of polyethylene glycol(PEG), added to the paste, on surface morphology of the films and on the solar cell performance. Energy conversion efficiency was found to increase with PEG addition up to 20 % by weight of and then decrease with further addition due to the aggregation of nano particles in the film. In this study, the best result of dye-sensitized solar cell was the short circuit current(Isc) of , the open circuit voltage (Voc) of 0.73 V, the fill factor (ff) of 0.55 and the overall energy conversion efficiency () of 9.1 % under illumination with AM 1.5 simulated sunlight.