期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 39, 页码 13902-13908出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja507945h
关键词
-
资金
- NSFC [51202008]
- Postdoctoral Science Foundation of China [2013M540037]
- South University of Science and Technology of China from Shenzhen government
- national 1000 plan for young scientists
We report a greatly enhanced thermoelectric performance in a BiCuSeO system, realized by improving carrier mobility through modulation doping. The hetero-structures of the modulation doped sample make charge carriers transport preferentially in the low carrier concentration area, which increases carrier mobility by a factor of 2 while maintaining the carrier concentration similar to that in the uniformly doped sample. The improved electrical conductivity and retained Seebeck coefficient synergistically lead to a broad, high power factor ranging from 5 to 10 mu W cm(-1) K-2. Coupling the extraordinarily high power factor with the extremely low thermal conductivity of similar to 0.25 W m(-1) K-1 at 923 K, a high ZT approximate to 1.4 is achieved in a BiCuSeO system.
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