2024. ZnO/CuO/CdS Heterojunction Nanostructures as N-P-N for Optoelectronic Applications Effectiveness of Optoelectronic Devices. Iraqi Journal of Science. 65, 5 (May 2024), 2460–2468. DOI:https://doi.org/10.24996/ijs.2024.65.5.10.