Influence of thermal conductivity and of non-constant relaxation time on thermoelectricity in Mg3Sb2

被引：3

作者：

Farris, R. ^{[1
]}

Maccioni, M. B. ^{[1
]}

Filippetti, A. ^{[1
]}

Fiorentini, V. ^{[1
]}

机构：

[1] Univ Cagliari, Dept Phys, Cittadella Univ, I-09042 Monserrato, CA, Italy

来源：

9TH YOUNG RESEARCHER MEETING | 2019年 / 1226卷

关键词：

D O I：

10.1088/1742-6596/1226/1/012010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the effects of different approximations to thermal conductivity and relaxation time on the thermoelectric figure of merit ZT in n-doped Mg3Sb2. We use density-functional electronic structure and Bloch-Boltzmann transport theory with an energy-dependent relaxation time. ZT is monotonically increasing with T in our range (300-700 K) with a maximum value of similar to 1.5.

引用

页数：4

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