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Boosting the thermoelectric performance of p-type polycrystalline SnSe with high doping efficiency via precipitation design

文献类型：期刊论文

作者Li, Chengjun6; Peng, Kunling1; Wu, Hong2,3,6; Li, Nanhai6; Zhang, Bin5; Wang, Guiwen5; Gong, Xiangnan5; Lu, Xu4,6; Wang, Guoyu2,3; Zhou, Xiaoyuan5,6
刊名JOURNAL OF MATERIALS CHEMISTRY A
出版日期2021-02-07
卷号9期号:5页码:2991-2998
ISSN号2050-7488
DOI10.1039/d0ta11356e
通讯作者Lu, Xu(luxu@cqu.edu.cn) ; Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要Polycrystalline SnSe has been widely studied in recent years due to its potential in thermoelectric applications. However, the carrier concentration and electrical performance have not been effectively optimized due to the low doping efficiency for most of the reported polycrystalline SnSe systems. Herein, we report a high power factor (PF) of 0.89 mW m(-1) K-2 at 790 K in p-type polycrystalline SnSe, which benefits from the significantly optimized carrier concentration by (Na and Ag) co-doping and the enhancement of the Seebeck coefficient due to the increase of band effective mass via Te alloying. Meanwhile, the coexistence of Ag and Te rich precipitates and the increased grain boundaries in the bulk impressively reduce the lattice thermal conductivity to 0.36 W m(-1) K-1 at 790 K along the direction perpendicular to the pressure. Consequently, a high thermoelectric figure of merit zT of 1.47 at 790 K and an average zT of 0.67 over the measured temperature range have been achieved in the polycrystalline SnSe sample.
资助项目National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51877023] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51672270] ; Fundamental Research Funds for the Central Universities[2018CDQYWL0048] ; Fundamental Research Funds for the Central Universities[2018CDPTCG0001/26] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Fundamental Research Funds for the Central Universities[2018CDJDWL0011] ; Fundamental Research Funds for the Central Universities[2019CDXYFXCS0006] ; Chongqing University ; Key Research Program of Frontier Sciences, CAS[QYZBDSSWSLH016] ; Natural Science Foundation of Chongqing[CSTC2017jcyjAX0388] ; Natural Science Foundation of Chongqing[cstc2019jcyjmsxmX0554]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
出版者ROYAL SOC CHEMISTRY
WOS记录号WOS:000616679700042
源URL[http://119.78.100.138/handle/2HOD01W0/12925]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Lu, Xu; Wang, Guoyu; Zhou, Xiaoyuan
作者单位1.Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100044, Peoples R China
4.Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400030, Peoples R China
5.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
6.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Li, Chengjun,Peng, Kunling,Wu, Hong,et al. Boosting the thermoelectric performance of p-type polycrystalline SnSe with high doping efficiency via precipitation design[J]. JOURNAL OF MATERIALS CHEMISTRY A,2021,9(5):2991-2998.
APA Li, Chengjun.,Peng, Kunling.,Wu, Hong.,Li, Nanhai.,Zhang, Bin.,...&Zhou, Xiaoyuan.(2021).Boosting the thermoelectric performance of p-type polycrystalline SnSe with high doping efficiency via precipitation design.JOURNAL OF MATERIALS CHEMISTRY A,9(5),2991-2998.
MLA Li, Chengjun,et al."Boosting the thermoelectric performance of p-type polycrystalline SnSe with high doping efficiency via precipitation design".JOURNAL OF MATERIALS CHEMISTRY A 9.5(2021):2991-2998.

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来源：重庆绿色智能技术研究院

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