Multiple nanostructures in high performance Cu2S0.5Te0.5thermoelectric materials

doi:10.1016/j.ceramint.2017.03.103

	Multiple nanostructures in high performance Cu2S0.5Te0.5thermoelectric materials
	Zhu, Chenxi 1,2,3; He, Ying 1; Lu, Ping 1,2; Fu, Zhengqian 1,2; Xu, Fangfang 1,2; Yao, Heliang 2; Zhang, Linlin 2; Shi, Xun 1; Chen, Lidong 1
刊名	Ceramics International
	2017
卷号	43 期号:10 页码:7866-7869
ISSN号	02728842
DOI	10.1016/j.ceramint.2017.03.103
英文摘要	Cu2(S,Te) solid solution material has shown excellent thermoelectric performance with a maximum zT value up to 2.1. Previous work has observed specific mosaic nanocrystals in this solid solution which is considered to be responsible for its ultra-low thermal conductivity. In the present study, we performed in-depth microstructural examinations by transmission electron microscopy and revealed additional multiform nanostructures in Cu2S0.5Te0.5solid solution. Apart from widely existed mosaic nanocrystals, nano-domains of ordered structure, nanoscale periodic antiphase domains, stacking faults and polytype have been observed. Formation of such abundant nanoscale substructures could be related to the large mismatch in atomic size between S and Te solute elements. These nanostructures are all coherently embedded in the matrix lattice. Thereafter, continuous carrier transportation is still guaranteed while in the meantime phonon scattering is enhanced by such high density of structural imperfection. Thus, solid solution strategy in Cu2S0.5Te0.5matches well with the phonon-glass electron-crystal concept for high performance thermoelectric materials. © 2017 Elsevier Ltd and Techna Group S.r.l.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25478]
专题	中国科学院上海硅酸盐研究所
作者单位	1.State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.Shanghai Institute for Materials Genome, Shanghai, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式 GB/T 7714	Zhu, Chenxi,He, Ying,Lu, Ping,et al. Multiple nanostructures in high performance Cu2S0.5Te0.5thermoelectric materials[J]. Ceramics International,2017,43(10):7866-7869.
APA	Zhu, Chenxi.,He, Ying.,Lu, Ping.,Fu, Zhengqian.,Xu, Fangfang.,...&Chen, Lidong.(2017).Multiple nanostructures in high performance Cu2S0.5Te0.5thermoelectric materials.Ceramics International,43(10),7866-7869.
MLA	Zhu, Chenxi,et al."Multiple nanostructures in high performance Cu2S0.5Te0.5thermoelectric materials".Ceramics International 43.10(2017):7866-7869.