▎ 摘　　要

Dense and aligned ZnO nanorods arrays with high optical quality are synthesized on the Si substrate with the assist of Au-graphene hybrid layer via chemical vapor deposition (CVD) method. The individual and combined effects of graphene and Au layer are analyzed in our experiment. The results show that only randomly oriented ZnO nanorods or nanowires with a broad green emission band are obtained with individual Au layer or individual graphene layer as nucleation sites. We also verify that the Au-graphene hybrid layer can provide favorable nucleation sites for the fabrication of aligned ZnO nanorods. The graphene layer in the Au-graphene hybrid layer plays a crucial role for the alignment of ZnO growth and the Au layer in the Au-graphene hybrid layer can limit the graphene oxidation and catalyze synthesis of rods-like ZnO nanostructures. SEM, HRTEM, EDS, XRD, Raman and PL spectra are used to analyze the morphology, crystallinity, structural and optical properties of the ZnO nanostructures.