中文版 | English
Title

Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments

Author
Corresponding AuthorHe,Jiaqing; Zhao,Li Dong
Publication Years
2021-07-30
DOI
Source Title
ISSN
0036-8075
EISSN
1095-9203
Volume373Issue:6554Pages:556-561
Abstract

Thermoelectric materials transfer heat and electrical energy, hence they are useful for power generation or cooling applications. Many of these materials have narrow bandgaps, especially for cooling applications. We developed SnSe crystals with a wide bandgap (Eg ≈ 33 kBT) with attractive thermoelectric properties through Pb alloying. The momentum and energy multiband alignments promoted by Pb alloying resulted in an ultrahigh power factor of ∼75 mW cm-1 K-2 at 300 K, and an average figure of merit ZT of ∼1.90. We found that a 31-pair thermoelectric device can produce a power generation efficiency of ∼4.4% and a cooling DTmax of ∼45.7 K. These results demonstrate that wide-bandgap compounds can be used for thermoelectric cooling applications.

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English
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SUSTech Authorship
Corresponding
WOS Accession No
WOS:000681716000042
Scopus EID
2-s2.0-85111538836
Data Source
Scopus
Citation statistics
Cited Times [WOS]:73
Document TypeJournal Article
Identifierhttps://kc.sustech.edu.cn/handle/2SGJ60CL/242065
DepartmentDepartment of Physics
Affiliation
1.School of Materials Science and Engineering,Beihang University,Beijing,100191,China
2.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
3.Key Laboratory of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China
4.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan,430070,China
Corresponding Author AffilicationDepartment of Physics
Recommended Citation
GB/T 7714
Qin,Bingchao,Wang,Dongyang,Liu,Xixi,et al. Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments[J]. Science,2021,373(6554):556-561.
APA
Qin,Bingchao.,Wang,Dongyang.,Liu,Xixi.,Qin,Yongxin.,Dong,Jin Feng.,...&Zhao,Li Dong.(2021).Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments.Science,373(6554),556-561.
MLA
Qin,Bingchao,et al."Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments".Science 373.6554(2021):556-561.
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