A T-type method for characterization of the thermoelectric performance of an individual free-standing single crystal Bi2S3 nanowire

Weigang Ma; Tingting Miao; Xing Zhang; Koji Takahashi; Tatsuya Ikuta; Boping Zhang; Zhenhua Ge

doi:10.1039/C5NR05946A

A T-type method for characterization of the thermoelectric performance of an individual free-standing single crystal Bi₂S₃ nanowire†

Weigang Ma,‡^a Tingting Miao,‡^ab Xing Zhang,*^a Koji Takahashi,^c Tatsuya Ikuta,^c Boping Zhang^d and Zhenhua Ge^d

* Corresponding authors

^a Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
E-mail: x-zhang@tsinghua.edu.cn

^b Beijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China

^c Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan

^d Beijing Key Lab of New Energy Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China

Abstract

A comprehensive method to evaluate the thermoelectric performance of one-dimensional nanostructures, called the T-type method, has been first developed. The thermoelectric properties, including the Seebeck coefficient, thermal conductivity and electrical conductivity, of an individual free-standing single crystal Bi₂S₃ nanowire have been first characterized by applying the T-type method. The determined figure of merit is far less than the reported values of nanostructured bulk Bi₂S₃ samples, and the mechanism is that the Seebeck coefficient is nearly zero in the temperature range of 300–420 K and changes its sign at 320 K.

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Article information

DOI: https://doi.org/10.1039/C5NR05946A
Article type: Paper
Submitted: 31 Aug 2015
Accepted: 27 Dec 2015
First published: 28 Dec 2015

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Nanoscale, 2016,8, 2704-2710

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A T-type method for characterization of the thermoelectric performance of an individual free-standing single crystal Bi₂S₃ nanowire

W. Ma, T. Miao, X. Zhang, K. Takahashi, T. Ikuta, B. Zhang and Z. Ge, Nanoscale, 2016, 8, 2704 DOI: 10.1039/C5NR05946A

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