期刊
APL MATERIALS
卷 6, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5018621
关键词
-
资金
- Ministry of Education of China [6141A020222232]
- Science and Technology Project of Guangdong [2015B090926010]
- High-level Personnel Special Support Program of Guangdong Province [2014TX01C087]
- Fundamental Research Funds for Central Universities [2015ZP019, D2160590]
Bi2Te3-based materials have been reported to be one of the best room-temperature thermoelectric materials, and it is a challenge to substantially improve their thermoelectric properties. Here novel Bi2Te3 core fibers with borosilicate glass cladding were fabricated utilizing a modified molten core drawing method. The Bi2Te3 core of the fiber was found to consist of hexagonal polycrystalline nanosheets, and polycrystalline nanosheets had a preferential orientation; in other words, the hexagonal Bi2Te3 lamellar cleavage more tended to be parallel to the symmetry axis of the fibers. Compared with a homemade 3-mm-diameter Bi2Te3 rod, the polycrystalline nanosheets' preferential orientation in the 89-mu m-diameter Bi2Te3 core increased its electrical conductivity, but deduced its Seebeck coefficient. The Bi2Te3 core exhibits an ultra-high ZT of 0.73 at 300 K, which is 232% higher than that of the Bi2Te3 rod. The demonstration of fibers with oriented nano-polycrystalline core and the integration with an efficient fabrication technique will pave the way for the fabrication of high-performance thermoelectric fibers. (c) 2018 Author(s).
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