In this paper, we report the synthesis results of Ga 2 O 3 semiconductor nanowires (NWs) on GaAs (100) semi-insulator substrate by vapor liquid solid (VLS) method. Our study based on Ag nanoparticle (AgNP) catalyst, in which prepared by conventional sol-gel method. As the GaAs wafer, after being deposited an AgNP layer in HF/AgNO 3 aqueous solution, which dried and loaded to vacuum-chamber. GaAs slices heated in vacuum-furnace by VLS method with two temperature modes. The results showed that the Ga 2 O 3 NW morphologies and properties depend strongly on technological conditions, such as AgNP catalyst concentration, growth temperature, and vapor pressure. It is also indicated that the NW random grown over large area with the diameter in the region conform from 18 to 30 nm scale and lengths ranging from several tens of nm to a few hundred micrometers.
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