Study of solvent dependence of Methyl Red and C60 based organic photovoltaic devices

► We report the effect of solvent on Methyl Red and C60 based photovoltaic device. ► Two solvents namely chlorobenzene (CB) and toluene are used. ► Film morphology and device efficiency change with solvent. ► Cluster size is quite small in case of CB in comparison to toluene solvent. ► Faster charge transport in CB prevents excess recombination resulting high efficiency.