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Synergistically promoted thermoelectric performance of SnTe by alloying with NaBiTe2

文献类型：期刊论文

作者Zhang, Mengke1,2; Tang, Xiaodan1,2; Li, Nanhai1,2; Wang, Guiwen3; Wang, Guoyu1; Liu, Anping2; Lu, Xu2; Zhou, Xiaoyuan2
刊名APPLIED PHYSICS LETTERS
出版日期2020-04-27
卷号116期号:17页码:5
ISSN号0003-6951
DOI10.1063/1.5144697
通讯作者Lu, Xu(luxu@cqu.edu.cn) ; Zhou, Xiaoyuan(Xiaoyuan2013@cqu.edu.cn)
英文摘要SnTe, as a lead-free analog of PbTe, shows limited thermoelectric performance because of the high hole concentration arising from intrinsic Sn vacancies and its high thermal conductivity. Herein, we show a significantly improved thermoelectric performance in p-type SnTe through NaBiTe2 alloying, by which carrier concentration optimization, band structure engineering, and thermal conductivity reduction are simultaneously realized. Band modification is confirmed by transport coefficient analysis based on the single parabolic band model. The low lattice thermal conductivity of SnTe-NaBiTe2 solid solutions is ascribed to point defect scattering. As a result, a zT value of similar to 1.1 at 834K is achieved in the sample with the nominal composition of (SnTe)(0.96)(NaBiTe2)(0.04).
资助项目National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51672270] ; Fundamental Research Funds for the Central Universities[2018CQDYWL0048] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Fundamental Research Funds for the Central Universities[2018CDJDWL0011] ; Fundamental Research Funds for the Central Universities[2019CDXYFXCS0006] ; Graduate Scientific Research and Innovation Foundation of Chongqing[CYB 19064] ; Key Research Program of Frontier Sciences, CAS[QYZBDSSWSLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2017jcyjAX0388] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2019jcyj-msxmX0554]
WOS研究方向Physics
语种英语
WOS记录号WOS:000530431500002
出版者AMER INST PHYSICS
源URL[http://119.78.100.138/handle/2HOD01W0/10939]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Lu, Xu; Zhou, Xiaoyuan
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
2.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
3.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Mengke,Tang, Xiaodan,Li, Nanhai,et al. Synergistically promoted thermoelectric performance of SnTe by alloying with NaBiTe2[J]. APPLIED PHYSICS LETTERS,2020,116(17):5.
APA Zhang, Mengke.,Tang, Xiaodan.,Li, Nanhai.,Wang, Guiwen.,Wang, Guoyu.,...&Zhou, Xiaoyuan.(2020).Synergistically promoted thermoelectric performance of SnTe by alloying with NaBiTe2.APPLIED PHYSICS LETTERS,116(17),5.
MLA Zhang, Mengke,et al."Synergistically promoted thermoelectric performance of SnTe by alloying with NaBiTe2".APPLIED PHYSICS LETTERS 116.17(2020):5.

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来源：重庆绿色智能技术研究院

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