APPLICATIONS OF PProDOT-Bz2 / PT COMPOSITE COUNTER ELECTRODES IN DSSCS UNDER DIFFERENT ILLUMINATION INTENSITIES

APPLICATIONS OF PProDOT-Bz2 / PT COMPOSITE COUNTER ELECTRODES IN DSSCS UNDER DIFFERENT ILLUMINATION INTENSITIES

Poly(3,3-dibenzyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine) (PProDOT-Bz2)/platinum (Pt) composites films were employedas counter electrodes (CE) for dye-sensitized solar cells (DSSCs). The composite films were deposited onto fluorine-doped tin oxide(FTO) substrate by sputtering Pt for 10 s and 30 s (Pt-FTO glass). 25 mC cm-2 and 50 mC cm-2 PProDOT-Bz2 were electrochemicallysynthesized on 10 s and 30 s Pt-FTO glass. The composites films were characterized via electrochemical impedance spectroscopy(EIS). The DSSC based on 25 mC cm-2 PProDor-Bz2 / 30 s Pt composite films exhibits short-circuit current density (Jsc) of 11.11mA cm-2, open circuit voltage (Voc) of 0.62 V, fill factor (FF) of 68.74%, and the photovoltaic conversion efficiency of 4.72%.Furthermore, the DSSC is a promising device because it can work under indoor fluorescent light. In this study, the compositescounter electrodes under different light intensities are also investigated.