Enhanced thermoelectric figure of merit in p-type β-Zn4Sb3/Bi0.4Sb1.6Te3 nanocomposites

被引：28

作者：

Li, Yuanyue ^{[1
]}

Dou, Yunchen ^{[1
]}

Qin, Xiaoying ^{[1
]}

Zhang, Jian ^{[1
]}

Xin, Hongxing ^{[1
]}

Li, Di ^{[1
]}

Song, Chunjun ^{[1
]}

Zou, Tianhua ^{[1
]}

Liu, Yongfei ^{[1
]}

Li, Cong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 15期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE; ALLOYS; ZN4SB3;

D O I：

10.1039/c5ra25012a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The thermoelectric properties of Bi0.4Sb1.6Te3-based composites incorporated with beta-Zn4Sb3 nanoparticles are investigated in the temperature range from 300 K to 500 K. The results show that similar to 5% increase in Seebeck coefficient and similar to 32% reduction of lattice thermal conductivity at 443 K are concurrently realized in the nanocomposite system with 1.3 vol% of beta-Zn4Sb3, which originates from energy filtering effect as well as enhanced phonon scattering at dispersed nanoparticles and phase boundaries, respectively. As a result, the largest figure of merit ZT=1.43 is achieved at 443 K for the sample with 1.3 vol% of beta-Zn4Sb3 nanoinclusions, which is similar to 18% larger than that (= 1.21) of the Bi0.4Sb1.6Te3 matrix.

引用

页码：12243 / 12248

页数：6

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