Structural and Optical Prperties of (ZnO/NiO) Thin Films MixtureAli Amiar, Okba Belahssen, Mebrouk Ghougali, Mourad Mimouni, Ghani Rihia, Mohammed Sadok Mahboub, Yamina BenkrimaEast European Journal of Physics(3)، Pages 314-3202023Article Open access 2