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Measurement and analysis of thermopower and electrical conductivity of an indium antimonide nanowire from a vapor-liquid-solid method

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9 Author(s)
Seol, Jae Hun ; Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712 and Center for Nano and Molecular Science and Technology, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712 ; Moore, Arden L. ; Saha, Sanjoy K. ; Zhou, Feng
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It has been suggested by theoretical calculation that indium antimonide (InSb) nanowires can possess improved thermoelectric properties compared to the corresponding bulk crystal. Here we fabricated a device using electron beam lithography to measure the thermopower and electrical conductivity of an individual InSb nanowire grown using a vapor-liquid-solid method. The comparison between the measurement results and transport simulations reveals that the nanowire was unintentionally degenerately doped with donors. Better control of the impurity doping concentration can improve the thermoelectric properties.

Published in:

Journal of Applied Physics  (Volume:101 ,  Issue: 2 )

Date of Publication:

Jan 2007

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