中文版 | English
Title

Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe2

Author
Corresponding AuthorBiswas,Kanishka
Publication Years
2021-02-12
DOI
Source Title
ISSN
0036-8075
EISSN
1095-9203
Volume371Issue:6530Pages:722-727
Abstract
High thermoelectric performance is generally achieved through either electronic structure modulations or phonon scattering enhancements, which often counteract each other. A leap in performance requires innovative strategies that simultaneously optimize electronic and phonon transports. We demonstrate high thermoelectric performance with a near room-temperature figure of merit, ZT ~ 1.5, and a maximum ZT ~ 2.6 at 573 kelvin, by optimizing atomic disorder in cadmium-doped polycrystalline silver antimony telluride (AgSbTe). Cadmium doping in AgSbTe enhances cationic ordering, which simultaneously improves electronic properties by tuning disorder-induced localization of electronic states and reduces lattice thermal conductivity through spontaneous formation of nanoscale (~2 to 4 nanometers) superstructures and coupling of soft vibrations localized within ~1 nanometer around cadmium sites with local strain modulation. The strategy is applicable to most other thermoelectric materials that exhibit inherent atomic disorder.
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Others
Funding Project
Swarnajayanti Fellowship, Science and Engineering Research Board (SERB)[SB/SJF/2019-20/06] ; Department of Science and Technology (DST), India[DST/SJF/CSA-02/2018-19] ; National Natural Science Foundation of China[11934007] ; Science and Technology Innovation Committee Foundation of Shenzhen[KQTD2016022619565991]
WOS Research Area
Science & Technology - Other Topics
WOS Subject
Multidisciplinary Sciences
WOS Accession No
WOS:000617551600046
Publisher
ESI Research Field
MULTIDISCIPLINARY
Scopus EID
2-s2.0-85101308388
Data Source
Scopus
Citation statistics
Cited Times [WOS]:59
Document TypeJournal Article
Identifierhttps://kc.sustech.edu.cn/handle/2SGJ60CL/221635
DepartmentDepartment of Physics
Affiliation
1.New Chemistry Unit,Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR),Bangalore,Jakkur P.O.,560064,India
2.Theoretical Sciences Unit,JNCASR,Bangalore,Jakkur P.O.,560064,India
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Basic Science,Indian Institute of Technology Mandi,Mandi, Himachal Pradesh,175075,India
5.School of Advanced Materials,JNCASR,Bangalore,Jakkur P.O.,560064,India
6.International Centre for Materials Science,JNCASR,Bangalore,Jakkur P.O.,560064,India
Recommended Citation
GB/T 7714
Roychowdhury,Subhajit,Ghosh,Tanmoy,Arora,Raagya,et al. Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe2[J]. Science,2021,371(6530):722-727.
APA
Roychowdhury,Subhajit.,Ghosh,Tanmoy.,Arora,Raagya.,Samanta,Manisha.,Xie,Lin.,...&Biswas,Kanishka.(2021).Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe2.Science,371(6530),722-727.
MLA
Roychowdhury,Subhajit,et al."Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe2".Science 371.6530(2021):722-727.
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