The Effects of Annealing Temperature on the Structural and Optical Properties of Nanostructured ZnO Nanorods Grown on Au Coated Si by Sol-gel Immerse Method

摘要

Zinc oxide (ZnO) nanorods were prepared by sol-gel method on silicon wafer substrates using immerse technique. The silicon wafers were previously sputter coated with 6nm of Au. Neutral solutions of zinc nitrate hexahydrate (ZnNO3.6H_2O) as the precursor of Zn~(2+) added with stabilizer hexamethylenetetraamine (HMTA) at 1:1 ratio were successfully used to produce rod-like ZnO nanostructures that grow laterally during subsequent thermal annealing. The morphology and optical characteristic were studied by a scanning electron microscope (SEM) and Photoluminescence (PL) spectrometer. The effects of different annealing temperature to the structural and optical property of ZnO nanorods were subsequently discussed in the paper.