Combination of Polyaniline and Graphene Oxide as Counter Electrode Composite in Dye-Sensitized Solar Cells Risa Rahmawati Sunarya(1,2), Veinardi Suendo(*1), Rahmat Hidayat(3)
1Inorganic and Physical Chemistry Research Division, FMIPA, Institut Teknologi Bandung
2Chemistry Education Study Programme, FTK, UIN Sunan Gunung Djati Bandung
3Magnetic and Photonic Physics Research Division, FMIPA, Institut Teknologi Bandung
*Email: vsuendo[at]chem.itb.ac.id
Abstract
The usage of polyaniline (PANI) and graphene oxide (GO) composites film as counter electrode in DSSC was demonstrated. PANI was prepared using rapid mixing method in 0 ℃ for 24 hours. While GO was synthesized using sonication-assisted oxidation of graphite. PANI and GO was blended to produce PANI/GO composites. PANI/GO composites was deposited on synthetic graphite substrate laminated onto glass and applied as the counter electrode of dye sensitized solar cells (DSSC). PANI and GO has electrostatic interaction, π-π stacking interaction and hydrogen bonding that accelerate charge transfer in counter electrode. The optimum performance was obtained for PANI/GO of 3:1 w/w. Here, fill factor (FF), open circuit current (Voc), optimum short circuit current density (Jsc) and overall power conversion efficiency (PCE) under AM 1.5 100 mW cm−2 illumination are 43,2%, 0.64 Volt, 7.308 mA/cm2, and 2.25%, respectively. PANI/GO composites were characterized using Raman spectrometer, fourier transform infrared (FTIR) spectrometer, scanning electron microscope (SEM) and solar simulator.
Keywords: Dye-sensitized solar cells, emeraldine salt polyaniline, chemically-exfoliated graphene oxide, PANI/GO composite, Platinum-free counter electrode
