期刊
APL MATERIALS
卷 7, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5049586
关键词
-
资金
- European Union's Horizon 2020 funded project Thermally Integrated Smart Photonics Systems (TIPS) [644453]
- Science Foundation Ireland (SFI) [15/IA/3160]
- European Regional Development Fund [13/RC/2077]
- Science Foundation Industry Fellowship [SFI-16/IFB/4587]
In this work, we report the optimization of annealing process to improve the thermoelectric properties of pulse electrodeposited bismuth antimony telluride (Bi-Sb-Te) films by varying the annealing time-temperature profile. The innovative approach of sandwiched Te in between the Bi-Sb-Te layers aids in compensating the loss of tellurium during the annealing of BiSbTe thin films. An optimized Seebeck coefficient of 90.5 mu V/K along with a power factor of 240 mu W/mK(2) is achieved for samples annealed at 350 degrees C for 1 h under N-2 atmosphere with controlled heating and cooling rates. These improvements are attributed to a significant decrease in the carrier concentration as substantiated by the Hall measurements and to the increase in the crystallite size at the elevated temperatures as indicated by the X-ray diffraction pattern data. A comprehensive study on the annealing parameters reveals that the Seebeck coefficient and the electrical conductivity are considerably more sensitive to the annealing temperature than compared to the annealing time. (C) 2019 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