High Thermoelectric Performance of Co-Doped P-Type Polycrystalline SnSe via Optimizing Electrical Transport Properties

doi:10.1021/acsami.9b20610

	High Thermoelectric Performance of Co-Doped P-Type Polycrystalline SnSe via Optimizing Electrical Transport Properties
	Li, Chengjun 1; Wu, Hong 1,3,4; Zhang, Bin 2; Zhu, Huaxing 1; Fan, Yijing 1; Lu, Xu 1; Sun, Xiaonan 5; Zhang, Xiao 2; Wang, Guoyu 3,4; Zhou, Xiaoyuan 1,2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020-02-19
卷号	12 期号:7 页码:8446-8455
关键词	SnSe codoping thermoelectric performance Sn/Ag-rich particles conversion afficiency
ISSN号	1944-8244
DOI	10.1021/acsami.9b20610
通讯作者	Zhang, Xiao(seashellemma@163.com) ; Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要	This work systematically investigated the thermoelectric properties of p-type Na and M (M = K, Li, Ag) codoped polycrystalline SnSe. It is found that the electrical properties of polycrystalline SnSe can be improved significantly for (Na, Ag) codoped samples, contributed by the enhanced carrier concentration. Specifically, a carrier concentration of 6.23 x 10(19) cm(-3) was obtained in Sn0.98Na0.016Ag0.004Se sample at 335 K, an increase of 18% compared with that of the Na single-doped sample (5.22 x 10(19) cm(-3)). The power factor reached similar to 0.73 mW m(-1) K-2 for the Sn0.98Na0.016Ag0.004Se sample at 785 K, enhanced by similar to 26% compared with Na single-doped one. In addition, Sn-rich and Ag-rich particles/areas observed in the matrix of Sn0.98Na0.016Ag0.004Se contribute to the reduction of lattice thermal conductivity from 0.61 W m(-1) K-1 for Sn0.98Ag0.02Se to 0.47 W m(-1) K-1 at 785 K. The combination of simultaneously enhanced power factor and depressed thermal conductivity leads to a maximum ZT approximate to 1.2 at 785 K and a high average ZT approximate to 0.74 at 335-785 K for Sn0.98Na0.016Ag0.004Se, and generating a high theoretical conversion efficiency of similar to 11%. These illuminating discoveries could provide routes to enhance the thermoelectric performance in p-type polycrystalline SnSe.
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[51472036] ; 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, China[CSTC2015JCYJBX0026] ; Natural Science Foundation of Chongqing, China[CSTC2017jcyjAX0388] ; Natural Science Foundation of Chongqing, China[cstc2019jcyj-msxmX0554]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000515214300064
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10547]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Zhang, Xiao; Wang, Guoyu; Zhou, Xiaoyuan
作者单位	1.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 400044, Peoples R China 2.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100044, Peoples R China 5.Chongqing Univ, Inst Environm Phys, Coll Phys, Chongqing 400044, Peoples R China
推荐引用方式 GB/T 7714	Li, Chengjun,Wu, Hong,Zhang, Bin,et al. High Thermoelectric Performance of Co-Doped P-Type Polycrystalline SnSe via Optimizing Electrical Transport Properties[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(7):8446-8455.
APA	Li, Chengjun.,Wu, Hong.,Zhang, Bin.,Zhu, Huaxing.,Fan, Yijing.,...&Zhou, Xiaoyuan.(2020).High Thermoelectric Performance of Co-Doped P-Type Polycrystalline SnSe via Optimizing Electrical Transport Properties.ACS APPLIED MATERIALS & INTERFACES,12(7),8446-8455.
MLA	Li, Chengjun,et al."High Thermoelectric Performance of Co-Doped P-Type Polycrystalline SnSe via Optimizing Electrical Transport Properties".ACS APPLIED MATERIALS & INTERFACES 12.7(2020):8446-8455.