Comparison Study of Metal Oxides (CeO 2 , CuO, SnO 2 , CdO, ZnO and TiO 2 ) Decked Few Layered Graphene Nanocomposites for Dye-Sensitized Solar Cells

Recent research is focused on few layered graphene (FLG) with various metal oxides (MOs) as (MOs; CeO 2 , CuO, SnO 2 , CdO, ZnO, and TiO 2 ) nanocomposite materials are alternatives to critically important in the fabrication of solar cell devices. In this work, FLG with different MOs nanocomposites were prepared by a novel eco-friendly viable ultrasonic assisted route (UAR). The prepared FLG/MO nanocomposites were performed with various characterization techniques. The crystal and phase compositional were carried out through using X-ray diffraction technique. Surface morphological studies by field emission scanning electron microscope (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). Spectroscopic methods were done by Raman and UV-Vis Diffuse reflectance spectra (UV-DRS). The prepared FLG/MO nanocomposites materials were used as a photoanode, in the fabrication of dye sensitized solar cells (DSSCs). Compared to TiO 2 nanoparticles (NPs) and other FLG/MO nanocomposites, FLG/TiO 2 nanocomposites exhibited superior photovoltaic properties. The obtained results indicate that FLG/TiO 2 nanocomposites significantly improved the power conversion efficiency (PCE) of DSSCs. The photovoltaic analyses were performed in a solar simulator with an air mass (AM) of 1.5 G, power density of 100 m W/m 2 , and current density-voltage (J-V) was investigated using N719 dye.