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Field-Effect Transistor Behavior of Synthesized In2O3/InP (100) Nanowires via the Vapor-Liquid-Solid Method


Viet Duc Ngo, Tien Dai Nguyen, Tien Thanh Nguyen, Eui-Tae Kim, Viet Chien Nguyen, Marnadu Raj, Sang Jun Lee

Source title: 
Journal of Electronic Materials, 50: 59-64, 2020 (ISI)
Academic year of acceptance: 

We demonstrated the feasibility of using InP (100) substrates, a different indium source, for the synthesis of In2O3 nanowires by the vapor–liquid–solid (VLS) method using a 20-nm-thick Au layer as a catalyst. By varying the thickness of the Au layer and the growth temperature (T), the nanowires showed different morphologies. The nanowires grew along the (100) direction and had perfect crystallinity and lengths up to several hundreds of micrometers. The configured field-effect transistor revealed an n-type behavior with 115 μA of the drain-source current, IDS, under 1.0 V of gate voltage, VDS, at 1.33 × 10−4 kPa of pressure and temperature of 20°C. This result indicates that it is feasible to use different In sources to synthesize In2O3 nanowires by the VLS method for electronic devices.