▎ 摘　　要

In this current research, we described an enhanced power conversion efficiency of dye sensitized solar cell (DSSC) and fabricated through Few Layered Graphene (FLG)/CuO nanocomposite synthesized by ultrasonic assisted synthesis (UAS) by varying of FLG (1, 2 and 3 wt%) ratio. The FLG/CuOnanocomposites characteristic features understood through various microscopic techniques such as FE-SEM and HR-TEM. Phase and compositional analysis carried out by XRD, band gap calculations done by UV-Vis diffuse reflectance spectra (UV-DRS). The prepared FLG/CuO nanocomposites were used as working electrode materials and will be deposited like thin films on already fabricated fluorine-doped tin oxide (FTO) conductive glass substrate by doctor blade technique. Studied the effect of power conversion efficiency (PCE) in DSSC application with respect to different wt% of FLG in FLG/CuO nanocomposites. The photovoltaic characteristics and current density versus voltage (J-V) analysis done with N719 dye at AM 1.5G and 100 m W/m(2) of the solar simulator. The PCE 2.61% is the highest for FLG (1 wt%)/CuO nanocomposite compared to CuO NPs and other working electrodes.