Multiple nanostructures in high performance Cu2S0.5Te0.5 thermoelectric materials
Multiple nanostructures in high performance Cu2S0.5Te0.5 thermoelectric materials
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高性能Cu2S0.5Te0.5热电材料中的多重纳米结构
DOI：
10.1016/j.ceramint.2017.03.103
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发表时间：
2017-07
影响因子：
5.2
通讯作者：
Lidong Chen
中科院分区：
文献类型：
--
作者：
Chenxi Zhu;Ying He;Ping Lu;Zhengqian Fu;Fangfang Xu;Heliang Yao;Linlin Zhang;Xun Shi;Lidong Chen
Cu2(S,Te) solid solution material has shown excellent thermoelectric performance with a maximumzTvalue 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.
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影响因子：
64.8
作者：
G. C. TRIGUNAYAT-
通讯作者：
G. C. TRIGUNAYAT-
影响因子：
41.2
作者：
Liu, Huili;Shi, Xun;Snyder, G. Jeffrey
通讯作者：
Snyder, G. Jeffrey
影响因子：
0.7
作者：
I. Amiraslanov;N. Alieva;G. Guseĭnov
通讯作者：
I. Amiraslanov;N. Alieva;G. Guseĭnov
影响因子：
19
作者：
Gascoin, F;Ottensmann, S;Snyder, GJ
通讯作者：
Snyder, GJ
影响因子：
15
作者：
P. Poudeu;J. D'Angelo;H. Kong;A. Downey;Jarrod L Short;R. Pcionek;T. Hogan;C. Uher;M. Kanatzidis-M.
通讯作者：
P. Poudeu;J. D'Angelo;H. Kong;A. Downey;Jarrod L Short;R. Pcionek;T. Hogan;C. Uher;M. Kanatzidis-M.