Eco-friendly direct-current pulsed electropolymerization of polyaniline nanofibers on synthetic graphite substrate for counter electrode in dye-sensitized solar cells

This paper reports the study of the effect of varying duty cycles on the synthesis of PANI by pulsed electropolymerization method to the performance of PANI as a counter electrode in DSSC. The deposited PANI is in emeraldine salt form, confirmed by FTIR-ATR and Raman spectroscopy. SEM analysis observed that all PANIs has nanofiber morphology. PANI with a 10% duty cycle provides the smallest average diameters X - 80nm and lowest film thickness (11.56 mu m), lowest R-CT (59.00 Omega), lowest R-S (40.06 Omega), highest V-OC (0.688 V), and highest J(SC) (9.066 mA cm(-2)) that lead to the highest performance (eta = 2.402%). [GRAPHICS] .