Preparation and comparison performance of CuO Nanopartecles and CuO/TiO2 / Nanocomposite and application in solar cell

Nanostructures of metal oxides CuO, and TiO2 were prepared by the hydrothermal method. Also, CuO/TiO2 nanocomposites technique using an equal ratio 1:1 The properties compounds investigated through Field Emission Scanning Electron Microscopy FE-SEM, Transmission TEM, X-Ray Diffraction. images FE-SEM have confirmed that , nanoparticles structured as Nanoparticles, Spherical, CuO/ which mixed in rocks-like structures. results X-ray diffraction indicated presence (monoclinic structures, Tetragonal) respectively. with average crystallite sizes,( 13.10,8.65 10.12)nm, for CuO optical studied UV-Vis Spectroscopy. band gap products was determined UV-Visible spectrophotometry found to be 2.1, 3.0, 2.8 eV TiO2, NPs, /TiO2 Dye-sensitized solar cells (DSSCs) fabricated based on are casted onto (FTO) substrates (front electrode), while back electrode is carbon/FTO-glass substrate. Two types natural dyes used this study. Chlorophyll pigment green leek anthocyanin red cochineal pomegranate whereas iodine/ iodide KI/I2 electrolyte solution. efficiency rates (1.51,0.74 0.94) nanocomposites/ chlorophyll pigments present (1.20,0.558 0.88) Nps, respectively