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Electronic quality factor for thermoelectrics
Zhang, XY; Bu, ZL; Shi, XM; Chen, ZW; Lin, SQ; Shan, B; Wood, M; Snyder, AH; Chen, LD; Snyder, GJ; Pei, YZ
2020-11-01
Source PublicationSCIENCE ADVANCES
ISSN2375-2548
Issue46
SubtypeArticle
AbstractDevelopment of thermoelectrics usually involves trial-and-error investigations, including time-consuming synthesis and measurements. Here, we identify the electronic quality factor B-E for determining the maximum thermoelectric power factor, which can be conveniently estimated by a single measurement of Seebeck coefficient and electrical conductivity of only one sample, not necessarily optimized, at an arbitrary temperature. We demonstrate that thousands of experimental measurements in dozens of materials can all be described by a universal curve and a single material parameter B-E for each class of materials. Furthermore, any deviation in B-E with temperature or doping indicated new effects such as band convergence or additional scattering. This makes B-E a powerful tool for evaluating and guiding the development of thermoelectrics. We demonstrate the power of B-E to show both p-type GeTe alloys and n-type Mg3SbBi alloys as highly competitive materials, at near room temperature, to state-of-the-art Bi2Te3 alloys used in nearly all commercial applications.
DOI10.1126/sciadv.abc0726
WOS KeywordWASTE HEAT ; PERFORMANCE
Language英语
WOS Research AreaScience & Technology - Other Topics
PublisherAMER ASSOC ADVANCEMENT SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27641
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, XY,Bu, ZL,Shi, XM,et al. Electronic quality factor for thermoelectrics[J]. SCIENCE ADVANCES,2020(46).
APA Zhang, XY.,Bu, ZL.,Shi, XM.,Chen, ZW.,Lin, SQ.,...&Pei, YZ.(2020).Electronic quality factor for thermoelectrics.SCIENCE ADVANCES(46).
MLA Zhang, XY,et al."Electronic quality factor for thermoelectrics".SCIENCE ADVANCES .46(2020).
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