Bimetallic-reduced graphene oxide nanocomposites as a reactive counter electrodes for dye sensitized solar cells

This work outlines the facile route of fabricating bimetallic (tungsten and molybdenum)-reduced graphene oxide (rGO) nanocomposites (GWMo) as an electrocatalyst for use of counter electrodes in dye-sensitized solar cells (DSSCs). Systematic investigations were carried out to determine their properties using various characterization tools. The photovoltaic and electrochemical performance of the bimetallic nanocomposites were investigated using the J-V characteristics and cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Bode-plot, respectively. The well-grounded electrocatalytic performance of the as-prepared GWMo nanocomposites provides a feasible alternative to rare earth elements (i.e. platinum) and potentially reduces the production cost of cells (DSSCs). The catalytic activity and electrical conductivity of the GWMo nanocomposites exhibit a comparable power conversion efficiency (eta) of similar to 4.28%.