Electronic quality factor for thermoelectrics

doi:10.1126/sciadv.abc0726

SIC OpenIR

	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 Publication	SCIENCE ADVANCES
ISSN	2375-2548
Issue	46
Subtype	Article
Abstract	Development 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.
DOI	10.1126/sciadv.abc0726
WOS Keyword	WASTE HEAT ; PERFORMANCE
Language	英语
WOS Research Area	Science & Technology - Other Topics
Publisher	AMER ASSOC ADVANCEMENT SCIENCE
Citation statistics
Document Type	期刊论文
Identifier	http://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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