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题名

Enhanced atomic ordering leads to high thermoelectric performance in AgSbTe2

作者
通讯作者Biswas,Kanishka
发表日期
2021-02-12
DOI
发表期刊
ISSN
0036-8075
EISSN
1095-9203
卷号371期号:6530页码:722-727
摘要
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.
相关链接[Scopus记录]
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语种
英语
重要成果
NI期刊 ; NI论文 ; ESI热点 ; ESI高被引
学校署名
其他
资助项目
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研究方向
Science & Technology - Other Topics
WOS类目
Multidisciplinary Sciences
WOS记录号
WOS:000617551600046
出版者
ESI学科分类
BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;MATHEMATICS;COMPUTER SCIENCE;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;CHEMISTRY;PSYCHIATRY/PSYCHOLOGY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;ENGINEERING
Scopus记录号
2-s2.0-85101308388
来源库
Scopus
引用统计
被引频次[WOS]:323
成果类型期刊论文
条目标识符http://kc.sustech.edu.cn/handle/2SGJ60CL/221635
专题理学院_物理系
作者单位
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
推荐引用方式
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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