Facile Single-Step Electrodeposition of Flower-Shaped Cu doped ZnO Nanostructures for optical, photoluminescence and photocatalytic assessment, A.K. Manna, S.N. Sarangi, J. Singh, N.N.K. Reddy, S. Varma, C. Yuvaraj, Optical Materials, 169 (2026) 117624