Low Temperature Growth and Optical Properties of ZnO Nanowires Using an Aqueous Solution Method
Abstract:ZnO nanowires were grown on indium tin oxide (ITO) coated glass substrates at a low temperature of 90 °C using an aqueous solution method. The ZnO seeds were coated on the ITO thin films by using a spin coater. ZnO nanowires were formed in an aqueous solution containing zinc nitrate hexahydrate (Zn(NO3)2·6H2O) and hexamethylenetetramine (C6H12N4). The pH value and concentration of the solution play an important role in the growth and morphologies of ZnO nanowires. The size of ZnO naonowires increased as the concentration of the solution increased. It was formed with a top surface of hexagonal and tapered shape at low and high pH values respectively. Additionally, the single crystalline structure and optical property of the ZnO nanowires were investigated using high-resolution transmission electron microscopy and photoluminescence spectroscopy.
Document Type: Research Article
Publication date: 2012-02-01
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