Photo-Current Enhancement at Cu/p-Cu2O/rGO- Electrolyte Interface

A considerable photocurrent enhancement was found at the Cu/p Cu O/rGO-electrolyte interface in a photo-electrochemical cell with compared to that of Cu/p-Cu 2 O-electrolyte interface. The reason for the photocurrent enhancement may be due to the efficient charge separation process provided at Cu/p-Cu O/rGO-electrolyte interface. Here rGO (reduced graphene oxide) acts as an electron acceptor for the photo-generated charge carriersas it readily accept electrons from the conduction band of p-Cu1 was synthesized using electro-phoretic deposition (EPD) technique. Fabricated samples were characterized using diffuse reflectance spectra, photocurrent action spectra and the time development of the photocurrent of photo-electrochemical cells.