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Fabrication Process and Power Generation Characteristics of the Micro Thermoelectric Devices Composed of n-type Bi-Te and p-type Sb-Te Nanowires  

Kim, Min-Young (Materials Science and Engineering, Hongik University)
Park, Kyung-Won (Materials Science and Engineering, Hongik University)
Oh, Tae-Sung (Materials Science and Engineering, Hongik University)
Publication Information
Korean Journal of Metals and Materials / v.47, no.4, 2009 , pp. 248-255 More about this Journal
Abstract
A micro thermoelectric device was processed by electroplating the n-type Bi-Te nanowires and ptype Sb-Te nanowires into an alumina template with 200 nm pores. Power generation characteristics of the micro devices composed of the Bi-Te nanowires, the Sb-Te nanowires, and both the Bi-Te and the Sb-Te nanowires were analyzed with applying a temperature difference of $40^{\circ}C$ across the devices along the thickness direction. The n-type Bi-Te and the p-type Sb-Te nanowire devices exhibited thermoelectric power outputs of $3.8{\times}10^{-10}W$ and $4.8{\times}10^{-10}W$, respectively. The output power of the device composed of both the Bi-Te and the Sb-Te nanowires decreased to $1.4{\times}10^{-10}W$ due to a large electrical resistance of the Cu electrode connecting the Bi-Te nanowire array with the Sb-Te nanowire array.
Keywords
thermoelectrics; nanowire; bismuth telluride; electrodeposition; thermoelectric generation;
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