期刊
RSC ADVANCES
卷 7, 期 14, 页码 8258-8263出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra00140a
关键词
-
资金
- National Natural Science Foundation of China [11204134]
- Natural Science Foundation of Jiangsu Province [BK20161495]
- Major Program of Aerospace Advanced Manufacturing Technology Research Foundation NSFC
- CASC, China [U1537204]
- NSFC [51331006]
We report a high ZT value of 1.3 at 850 K for undoped polycrystalline SnSe. The high thermoelectric performance is attributed to a synergistic combination of enhanced power factor and reduction of the lattice thermal conductivity. The presence of rock-salt cubic phase SnSe was identified by X-ray diffraction, transmission electron backscatter diffraction and selected area electron diffraction, which significantly contributes to the enhancement of electrical conductivity and power factor of orthorhombic SnSe material. This new material features a microstructural hierarchy of nanoprecipitates coupled with mesoscale microstructures which leads to a significant reduction of lattice thermal conductivity. As a result, a vast increase in ZT from 0.5 to 1.3 at 850 K was achieved. Our work sheds light on a new mechanism to enhance the thermoelectric properties of SnSe materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据