Enhanced thermoelectric properties of n-type NbCoSn half-Heusler by improving phase purity

被引：74

作者：

He, Ran ^{[1
,2
]}

Huang, Lihong ^{[3
]}

Wang, Yumei ^{[1
,2
,4
]}

Samsonidze, Georgy ^{[5
]}

Kozinsky, Boris ^{[5
]}

Zhang, Qinyong ^{[3
]}

Ren, Zhifeng ^{[1
,2
]}

机构：

[1] Univ Houston, Dept Phys, Houston, TX 77204 USA

[2] Univ Houston, TcSUH, Houston, TX 77204 USA

[3] Xihua Univ, Ctr Adv Mat & Energy, Chengdu 610039, Sichuan, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China

[5] Robert Bosch LLC, Res & Technol Ctr, Cambridge, MA 02139 USA

来源：

APL MATERIALS | 2016年 / 4卷 / 10期

基金：

美国国家科学基金会;

关键词：

FIGURE; MERIT; CONVERGENCE;

D O I：

10.1063/1.4952994

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Here we report the thermoelectric properties of NbCoSn-based n-type half-Heuslers (HHs) that were obtained through arc melting, ball milling, and hot pressing process. With 10% Sb substitution at the Sn site, we obtained enhanced n-type properties with a maximum power factor reaching similar to 35 mu W cm(-1) K-2 and figure of merit (ZT) value similar to 0.6 in NbCoSn0.9Sb0.1. The ZT is doubled compared to the previous report. In addition, the specific power cost ($ W-1) is decreased by similar to 68% comparing to HfNiSn-based n-type HH because of the elimination of Hf. (C) 2016 Author(s).

引用

页数：9

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