Tehran University of Medical Sciences Frontiers in Biomedical Technologies 2345-5837 12 4 2025 10 01 684 695 Zaid H. Mahmoud Chemistry department, college of science, university of diyala, IRAQ Ghadir Ghadir College of Pharmacy, Al-Farahidi University, Iraq Hayder Al-Tmimi College of Health Medical Techniques, Al-Bayan University, Iraq Mustafa Jassim Al-Saray Department of Anesthesia Techniques, Al-Manara College For Medical Sciences, Maysan, Iraq Saeb Jasim Al-Shuwaili Department of Anesthesia Techniques, Al-Hadi University College, Baghdad, 10011, Iraq Abdulkareem M. Mohammed Collage of Pharmacy, National University of Science and Technology, Dhi Qar, 64001, Iraq Ahmed Muzahem Al-Ani Department of Medical Engineering, Al-Nisour University College, Baghdad, Iraq Noor Alhuda Mohammad Ali Khalil College of Health and Medical Technology, Al-Ayen University, Thi-Qar, 64001, Iraq Mohammed Mustafa Department of Medical Laboratory Technology, University of Imam Jaafar AL-Sadiq, Iraq 2024 02 23 2024 03 22 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%). https://fbt.tums.ac.ir/index.php/fbt/article/view/946 https://fbt.tums.ac.ir/index.php/fbt/article/download/946/446