rGO-Cu@TiO2 Nanocomposite: Photosynthesis, Characterization, and Dye Sensitized Solar Cell Performance

Purpose: In this work, nanocomposite with different weight ratios reduce graphene oxide/copper doping-anatase (rGO/Cu-TiO2) has been successfully prepared using the photolysis method to evaluate the role of rGO/Cu in photovoltaic properties performance application as a photoanodes. Materials and Methods: The X-Ray Diffraction (XRD), Raman spectrum, and X-Ray Photoelectron (XPS) results analysis confirmed successfully incorporating rGO/Cu in the TiO2 crystal structure. Transmission Electron Microscopy (TEM) reveals the formation of spherical agglomeration nanoparticles with a size approximately equal to 18nm. Results: The current density–voltage curves (J-V) and Intensity-Modulated Photocurrent Spectroscopy (IMPS) showed that the incorporation of rGO sheets enhances the ability of N3 loading of (rGO/Cu-TiO2) photoanodes with faster charge transfer. Conclusion: Our results illustrate that optimal Cu and rGO can increase the efficiency of dye-sensitized solar cells (4.56%) by 8.2% higher than TiO2 DSSCs (3.52%).