Study of the Structural and Optical Properties of Copper Nanoparticles Prepared by Pulsed Laser Ablation in Liquid and Study of their Effect on the Efficiency of Solar Cells. RSCI [Internet]. 2025 Jun. 1 [cited 2026 Oct. 18];34(2):26-3. Available from: https://rsci.uomosul.edu.iq/index.php/rsci/article/view/47424