Growth direction modulation and diameter-dependent mobility in InN nanowires
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Published on: June 18, 2013
Goutam Koley1, Zhihua Cai, Ehtesham Bin Quddus
1Department of Electrical Engineering and Nanocenter, University of South Carolina, Columbia, SC 29208, USA. koley@engr.sc.edu
Abstract:
Diameter-dependent electrical properties of InN nanowires (NWs) grown by chemical vapor deposition have been investigated. The NWs exhibited interesting properties of coplanar deflection at specific angles, either spontaneously, or when induced by other NWs or lithographically patterned barriers. InN NW-based back-gated field effect transistors (FETs) showed excellent gate control and drain current saturation behaviors. Both NW conductance and carrier mobility calculated from the FET characteristics were found to increase regularly with a decrease in NW diameter. The observed mobility and conductivity variations have been modeled by considering NW surface and core conduction paths.
