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  Co-regulation of the copper vacancy concentration and point defects leading to the enhanced thermoelectric performance of Cu3In5Te9-based chalcogenides

Li, M., Luo, Y., Hu, X., Han, Z.-K., Liu, X., & Cui, J. (2019). Co-regulation of the copper vacancy concentration and point defects leading to the enhanced thermoelectric performance of Cu3In5Te9-based chalcogenides. RSC Advances, 9(54), 31747-31752. doi:10.1039/C9RA06565B.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0004-E28A-1 Version Permalink: https://hdl.handle.net/21.11116/0000-000A-E547-4
Genre: Journal Article

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c9ra06565b.pdf (Publisher version), 602KB
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 Creators:
Li, Min1, 2, Author
Luo, Yong2, Author
Hu, Xiaojuan3, Author           
Han, Zhong-Kang3, Author           
Liu, Xianglian1, Author
Cui, Jiaolin1, Author
Affiliations:
1School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China, ou_persistent22              
2Materials Science and Engineering College, China University of Mining and Technology, Xuzhou 221116, China, ou_persistent22              
3NOMAD, Fritz Haber Institute, Max Planck Society, ou_3253022              

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 Abstract: Copper vacancy concentration (Vc) in ternary Cu–In–Te chalcogenides is an important factor to engineer carrier concentration (nH) and thermoelectric performance. However, it is not sufficient to regulate the phonon scattering in the Cu3In5Te9-based chalcogenides. In this work we manipulate the Vc value and point defects simultaneously through addition of Cu along with Ga substitution for In in Cu3In5Te9, and thereby increase the carrier concentration and reduce the lattice thermal conductivity. This strategy finally enables us to achieve ∼60% enhancement of the TE figure of merit (ZT) at Vc = 0.078 compared with the pristine Cu3In5Te9. It is also used as guidance to achieve the high TE performance of the ternary chalcogenides.

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Language(s): eng - English
 Dates: 2019-08-212019-10-012019-10-07
 Publication Status: Published online
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/C9RA06565B
 Degree: -

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Title: RSC Advances
  Abbreviation : RSC Adv.
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: 6 Volume / Issue: 9 (54) Sequence Number: - Start / End Page: 31747 - 31752 Identifier: ISSN: 2046-2069
CoNE: https://pure.mpg.de/cone/journals/resource/2046-2069