ZnO layer and tubular structures synthesized by a simple chemical solution route

摘要

We show the successful growth of ZnO layer and tubular structures on silicon substrates by a simple hydrothermal method. The products were characterized by field emission scanning electron microscopy (FE-SEM) and X-ray diffractometer (XRD). SEM images show that the nanotubes with outer diameters in the range of 120-250 nm, and wall thickness in the range of 30-50 mn. In addition, it was found that there were many incomplete ZnO nanotubes, which indicated that they were formed by scrolling of layer structure. And the possible growth mechanism was proposed. XRD shows that ZnO layers and nanotubes have hexagonal wurtzite structure.