Botanical Hydrocarbon Sources based MWCNTs Synthesized by Spray Pyrolysis Method for DSSC Applications

The present study aims to synthesize corrosion free counter electrodes for DSSC and evaluate their efficiency in comparison with carbon electrodes. We compare the PCE (Power Conversion Efficiency) of a MWCNT counter electrode DSSC with a carbon coated counter electrode DSSC. MWCNTs are prepared by a spray pyrolysis method and TiO2 nanoparticles are prepared by aWCT (Wet Chemical Technique). XRD analysis for TiO2 2θ = 25.3 shows the presence of anatase phase and 2θ = 25.9 shows the hexagonal graphite structure ofMWCNTs. SEM images of TiO2 nanoparticles show irregular morphology and for MWCNTs, the SEM image shows the formation of MWCNTS. The exact grain size ofMWCNTs and TiO2 nanoparticles are studied by TEM analysis. In the DSSC application, MWCNTs coated the DSSC show higher efficiency (2.5 %) than carbon coated DSSC (1.9 %).