Effect of Reaction Time on the Morphology of Zno Nanorods by Wet Chemical Method

During the past years, owing to ZnO physical properties (direct wide band gap of 3.37E(v) and large exciton binding energy of similar to 60 meV), ZnO has been attracting extensive attention. ZnO has many properties such as photoconductivity, piezoelectricity and high reflectivity in the IR range. These properties depend on its structures, size, morphology and density of crystal. Especially, one dimensional (1D) material has received lot of attention. It has wide range of applications, for example, laser diodes or light-emitting diodes, chemical sensors, heat reflectors, surface acoustic wave devices and so on. 1D ZnO has been fabricated by various methods, but almost all of the techniques have disadvantage of synthesis temperature. In this research, we fabricated ZnO nanorod on the glass substrate by a wet chemical process. The grown nanorods were characterized by X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM) measurements. XRD results showed that ZnO nanorods have high crystallity with wurtzite structure. FESEM micrographs showed the length and diameter of the aligned nanorods were dependent on the reaction time.