Thermoelectric Properties of Mineral Tetrahedrites Cu10Tr2Sb4S13 with Low Thermal Conductivity

被引：181
|
作者：
Suekuni, Koichiro [1 ]
Tsuruta, Kojiro [1 ]
Ariga, Tomoki [1 ]
Koyano, Mikio [2 ]
机构：
[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan
[2] Japan Adv Inst Sci & Technol, Green Devices Res Ctr, Nomi, Ishikawa 9231292, Japan
来源：
APPLIED PHYSICS EXPRESS | 2012年 / 5卷 / 05期
基金：
日本学术振兴会;
关键词：
TRANSPORT; POWER; FE;
D O I：
10.1143/APEX.5.051201
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated thermoelectric properties of synthesized mineral Cu10Tr2Sb4S13 (Tr = Mn, Fe, Co, Ni, Cu, and Zn) tetrahedrites, which have a cubic and complex crystal structure. The mother phase Tr = Cu shows metal-semiconductor transition and anomalous hysteresis. Through various Tr substitutions, the thermopower was increased and thermal conductivity was decreased. Results show that Tr = Ni had the largest dimensionless figure of merit ZT of 0.15 at 340 K. The main advantage for the large ZT is the quite low lattice thermal conductivity. Because of the large ZT and the environmentally friendly components, tetrahedrites are anticipated as a good thermoelectric material. (c) 2012 The Japan Society of Applied Physics
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页数：3
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