zT=1.1 in CuInTe2 Solid Solutions Enabled by Rational Defect Engineering

doi:10.1021/acsaem.9b01241

	zT=1.1 in CuInTe2 Solid Solutions Enabled by Rational Defect Engineering
	Yan, Yanci 2,3,4; Lu, Xu 1,4; Wang, Guoyu 2,3; Zhou, Xiaoyuan 1,4
刊名	ACS APPLIED ENERGY MATERIALS
	2020-03-23
卷号	3 期号:3 页码:2039-2048
关键词	thermoelectric performance CuInTe2 vacancy phonon scattering defect engineering thermal conductivity
ISSN号	2574-0962
DOI	10.1021/acsaem.9b01241
通讯作者	Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要	In this study, the synthesis and thermoelectric performance of CuInTe2-In2Te3 and Cu0.85Ag0.15InTe2-In2Te3 solid solutions are reported. The experimental results associated with model fitting reveal that the cation vacancies generated by creating solid solutions with a compound with a smaller cation-to-anion ratio can strongly scatter phonons with high frequency, which remarkably decrease the total as well as lattice thermal conductivity of the CuInTe2 system and finally realize an enhanced thermoelectric properties compared to the pristine sample. Furthermore, substitutional Ag/Cu defects integrated with vacancies lead to a further reduction in lattice thermal conductivity. With the benefit from the rational defect design, a high figure of merit of 1.1 is gained at 840 K for the sample (Cu0.85Ag0.15InTe2)(0.98)(In2Te3)(0.02). In addition, a 188% improvement on average zT is obtained. This work provides an effective method for boosting thermoelectric performance of chalcopyrite compounds by defect engineering on multiple types of defects.
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[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] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSWSLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2017jcyjAX0388]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000526598300002
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10923]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Wang, Guoyu; Zhou, Xiaoyuan
作者单位	1.Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ China, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100004, Peoples R China 4.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Yan, Yanci,Lu, Xu,Wang, Guoyu,et al. zT=1.1 in CuInTe2 Solid Solutions Enabled by Rational Defect Engineering[J]. ACS APPLIED ENERGY MATERIALS,2020,3(3):2039-2048.
APA	Yan, Yanci,Lu, Xu,Wang, Guoyu,&Zhou, Xiaoyuan.(2020).zT=1.1 in CuInTe2 Solid Solutions Enabled by Rational Defect Engineering.ACS APPLIED ENERGY MATERIALS,3(3),2039-2048.
MLA	Yan, Yanci,et al."zT=1.1 in CuInTe2 Solid Solutions Enabled by Rational Defect Engineering".ACS APPLIED ENERGY MATERIALS 3.3(2020):2039-2048.