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301. 


Annealing effect on the thermal conductivity of thermoelectric ZnTe nanowires



M. Shaygan, N. Kheirabi, K. Davami, B. Mortazavi, Jeong-Soo Lee, G. Cuniberti, M. Meyyappan

Materials Letters 135, 87-91 (2014)

We report here the effect of thermal annealing on the thermal conductivity of ZnTe nanowires measured on a microfabricated suspended device. Molecular dynamics simulation was used to calculate the effect of contacts on the measurements at different temperatures and to estimate the intrinsic nanowire thermal conductivity values. A decrease in thermal conductivity was observed after each thermal annealing step at all the measured temperatures. Thermal annealing can be a potential method to improve the thermoelectric efficiency of nanowires, not only by enhancing the electrical conduction as demonstrated before, but also by suppressing the thermal transport at the same time.



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doi absolute link10.1016/j.matlet.2014.07.114
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