Synergistically optimized thermoelectric properties of Ag1+xIn5Se8 alloys

doi:10.1039/c9qi01054h

	Synergistically optimized thermoelectric properties of Ag1+xIn5Se8 alloys
	Shen, Xingchen 2,3; Zhang, Bin 1; Chen, Qiuyi 2; Tan, Huan 2; Zhang, Xiao 1; Wang, Guoyu 3,4; Lu, Xu 2; Zhou, Xiaoyuan 1,2
刊名	INORGANIC CHEMISTRY FRONTIERS
	2019-12-01
卷号	6 期号:12 页码:3545-3553
ISSN号	2052-1553
DOI	10.1039/c9qi01054h
通讯作者	Wang, Guoyu(guoyuw@cigit.ac.cn) ; Lu, Xu(luxu@cqu.edu.cn)
英文摘要	The AgIn5Se8 diamond-like compound with low thermal conductivity is deemed to be a promising thermoelectric material, but its performance is limited by its low electrical conductivity. Herein, we report an effective method to increase the maximum and average zT values of AgIn5Se8-based compounds by adding excess Ag. All the samples exhibit increased carrier concentrations of similar to 10(18) cm(-3) at ambient temperature, leading to considerably enhanced electrical conductivity. Meanwhile, the excess Ag creates numerous point defects, twin boundaries and stacking faults, which serve as the internal-strain field to induce additional phonon scattering and lattice softening to lower the lattice thermal conductivity. The synergistic strategy yields a peak zT value of 0.67 at 883 K and an average zT value of 0.34 from 323 to 883 K for Ag1.03In5Se8.
资助项目	Fundamental Research Funds for the Central Universities[2018CDYJSY0055] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51472036] ; Graduate Scientific Research and Innovation Foundation of Chongqing, China[CYB 19064] ; CSC scholarship[201806050180] ; 2019 ITS Summer Fellowship ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2017JCYJAX0388]
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000501285400014
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10069]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Wang, Guoyu; Lu, Xu
作者单位	1.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 2.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, 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
推荐引用方式 GB/T 7714	Shen, Xingchen,Zhang, Bin,Chen, Qiuyi,et al. Synergistically optimized thermoelectric properties of Ag1+xIn5Se8 alloys[J]. INORGANIC CHEMISTRY FRONTIERS,2019,6(12):3545-3553.
APA	Shen, Xingchen.,Zhang, Bin.,Chen, Qiuyi.,Tan, Huan.,Zhang, Xiao.,...&Zhou, Xiaoyuan.(2019).Synergistically optimized thermoelectric properties of Ag1+xIn5Se8 alloys.INORGANIC CHEMISTRY FRONTIERS,6(12),3545-3553.
MLA	Shen, Xingchen,et al."Synergistically optimized thermoelectric properties of Ag1+xIn5Se8 alloys".INORGANIC CHEMISTRY FRONTIERS 6.12(2019):3545-3553.