Developing a new electrolytic method for CuO/Al2O3 nanocomposite synthesis and their application as a photoanode in dye-sensitized solar cells

Regarding sustainability, affordability, and material consumption, dye-sensitized solar cells (DSSCs) are among the finest solutions for addressing the pressing need to develop renewable energy sources. The current work reports, a straightforward electrochemical approach for synthesizing CuO/Al ₂ O ₃ nanocomposite. Investigates their structure, morphology, crystallinity, and power conversion efficiency (PCE) as efficient and low-cost photo-anode electrodes for dye-sensitized solar cells (DSSCs), CuO/Al ₂ O ₃ was characterized by atomic force microscopy (AFM), Transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-Vis spectroscopy and current-voltage (I-V) performance. The optical band gap was determined to be 3.18 eV. (DSSCs) parameters, including Voc, Isc, FF, and ɳ, were derived from the I-V curves. The (PCE) values of fabricated DSSCs were (0.65%, 0.83%, 0.78%, and 1.9232%) for ( Rossel, Chlorophyll, Methylene MB, and Methylene red dye MR) respectively. The results indicate that MR dye and CuO/Al ₂ O ₃ nanocomposite were the most effective sensitizer and photoanode among all evaluated alternatives.