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

文献类型：期刊论文

作者Yan, Yanci2,3,4; Lu, Xu1,3; Wang, Guoyu2,4; Zhou, Xiaoyuan1,3
刊名ACS APPLIED ENERGY MATERIALS
出版日期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
DOI10.1021/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
WOS记录号WOS:000526598300002
出版者AMER CHEMICAL SOC
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.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100004, 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.

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来源：重庆绿色智能技术研究院

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