Hydrothermal Growth of ZnO nanorods along the Ultra-Thin ZnO Seed Layer Prepared by Magnetron Sputtering

摘要

ZnO nanorods were grown on magnetron sputtered ultra-thin ZnO seed layers through a hydrothermal method. Before ZnO nanorods growth, the ultra-thin ZnO seed layer has been annealed at temperatures ranging from 100 to 400°C in air. The influence of annealing treatment on the crystalline structure of the ultra-thin ZnO seed layers has been investigated by X-ray diffraction (XRD). The size and density of final prepared ZnO nanorods were investigated by field-emission scanning electron microscopy (FE-SEM). It was found that the length and the aspect ratio of the ZnO nanorods can be readily tuned by control of the ZnO ultra-thin seeds layer which results from the annealing treatment process.