Abstract
ZnO nanorods were successfully grown on the p-Si substrate via the hydrothermal method. The influence of growth angle, precursor concentration and post-growth annealing on the structural and optical properties of grown ZnO nanorods were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL). Relatively well-aligned ZnO nanorods were obtained under the growth conditions of θ=70° (growth angle) and 0.05M precursor concentration. The PL spectra of ZnO nanorods, annealed in different atmospheres (oxygen, nitrogen and argon), revealed that the intensity of the violet, blue and green peaks were increased by annealing in different atmospheres. The nitrogen atmosphere has the strongest effect on the intensity of PL spectra.
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