Fabrication of three-dimensional ZnO with hierarchical structure via an electrodeposition process

摘要

A novel three-dimensional (3D) hierarchical structured ZnO was prepared on TiO₂ nanoparticles film by electrodeposition process from aqueous ZnCl₂ solution. The hierarchical structured ZnO was observed by scanning electron microscopy. The results showed that the deposition time had an obvious effect on the morphology of the ZnO structures. Accordingly, a possible growth mechanism was proposed. Furthermore, the room-temperature optical properties of hierarchical structured ZnO were investigated by photoluminescence spectrum, indicating that a strong green emission peak centered at 542 nm.