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  Pressure tuning of thermoelectric performance in FeNbSb

Pang, H.-J., Yu, H., Chen, L.-C., Fu, C.-G., Zhu, T.-J., & Chen, X.-J. (2019). Pressure tuning of thermoelectric performance in FeNbSb. Journal of Alloys and Compounds, 805, 1224-1230. doi:10.1016/j.jallcom.2019.07.165.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-AB69-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-AB6D-2
Genre: Journal Article

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 Creators:
Pang, Hong-Jie1, Author
Yu, Hao1, Author
Chen, Liu-Cheng1, Author
Fu, Chen-Guang2, Author              
Zhu, Tie-Jun1, Author
Chen, Xiao-Jia1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: Thermoelectric materials offer an ideal solution for the global energy crisis and environmental pollution as which can directly convert waste heat into electricity. From the view of device application, achieving large figure of merit zT at room temperature is highly desirable. Here, we choose a half-Heusler compound FeNb0.8Ti0.2Sb with a maximum zT of 1.1 at 1100 K as an example. By using the developed techniques for the high-pressure measurements, we investigate the potential of pressure to tune the thermoelectric performance at room temperature. An obvious improvement of zT by about 62.5 % is achieved at 4GPa. A pressure-induced electronic topological transition is proposed to contribute to such an improvement. This study points to a promising avenue to enhance the zT of half-Heusler compounds. (C) 2019 Elsevier B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2019-07-192019-07-19
 Publication Status: Published in print
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 Table of Contents: -
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Title: Journal of Alloys and Compounds
  Abbreviation : J. Alloy. Comp.
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier B.V.
Pages: - Volume / Issue: 805 Sequence Number: - Start / End Page: 1224 - 1230 Identifier: ISSN: 0925-8388
CoNE: https://pure.mpg.de/cone/journals/resource/954925567746