Etude des propriétés finales des nanostructures de l'oxyde de zinc électrodéposées

Abstract

Zinc oxide (ZnO) nanostructures have been synthesized by electrochemical deposition. These nanostructures were developed by electrodeposition under direct potential onto Indium-doped tin oxide (ITO) substrate from Zinc nitrate solution(Zn(〖NO〗_3 )_2).ZnO nanostructures obtained are homogeneous hexagonal shape. The resulting thin films were analyzed by various characterization techniques: optical, structural and morphological. The transmittance spectra indicate that the films exhibit a good optical quality with low defects density with an averaged band gap of ~3.7eV and transparency around ~85%. The structural study of the different samples conducted by X-ray diffraction (DRX) showed that ZnOis crystallized with a hexagonal structure of type Wurtzite on axis c (002). Topological analysis by AFM allowed to observe the topography and nanostructures of ZnO.