| Summary: | 碩士 === 國立成功大學 === 物理學系碩博士班 === 100 === In this research, we manufactured ZnO nanorods arrays by hydrothermal synthesis with external magnetic. First, 0.37g Znic nitrate hexahydrate as the source of Zn and 0.175g hexamethylenetetramine were mixed in 50ml DI water in the beaker. Next, the beaker together with a heater were placed inside a solenoid, which can generate a magnetic field up to 1000G. The ZnO nanorods arrays were grown on the Si substrate at 90℃. We investigated the effect of magnetic field on the structural, and optical properties by changing the strength of magnetic field, the nanorod grown direction with respect to magnetic field, and magnetic force.
From SEM, XRD and photoluminescence spectra analysis, we realized that the crystalline structure of ZnO nanorods can be improved due to the fact that magnetic field can damp the convection and therefore reduce the defects form inside ZnO nanorods.
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