Enhanced thermoelectric performance in Mg and Ca substituted CdO ceramics

被引：4

作者：

Gao, Linjie ^{[1
]}

Wang, Shufang ^{[1
]}

Liu, Ran ^{[1
]}

Zha, Xinyu ^{[1
]}

Sun, Niefeng ^{[2
]}

Wang, Shujie ^{[2
]}

Wang, Jianglong ^{[1
]}

Fu, Guangsheng ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China

[2] Hebei Semicond Res Inst, Natl Key Lab ASIC, Shijiazhuang 050051, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 48期

基金：

中国国家自然科学基金;

关键词：

THERMAL-CONDUCTIVITY; GRAIN-GROWTH; POWER; SRTIO3; FIGURE;

D O I：

10.1039/c6ra04175b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a more than 50% enhancement in the thermoelectric figure of merit ZT of CdO ceramics via simultaneous substituting with Mg and Ca. The Mg and Ca substitution is found to greatly suppress both the electrical and the lattice thermal conductivities of CdO while maintaining a moderate power factor. Detailed mechanisms are proposed to explain the experimental results. A ZT value of 0.5 at about 1000 K has been achieved in the optimum substituted sample, which is the highest ZT ever reported among the n-type oxide thermoelectric materials in this temperature range.

引用

页码：42249 / 42254

页数：6

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