Enhanced N-Type Bismuth-Telluride-Based Thermoelectric Fibers via Thermal Drawing and Bridgman Annealing

被引：4
|
作者：
Sun, Min [1 ]
Zhang, Pengyu [1 ,2 ]
Li, Qingmin [1 ,3 ]
Tang, Guowu [1 ,4 ]
Zhang, Ting [2 ,5 ]
Chen, Dongdan [1 ]
Qian, Qi [1 ]
机构：
[1] South China Univ Technol, Guangdong Engn Technol Res & Dev Ctr Special Opt, State Key Lab Luminescent Mat & Devices, Sch Mat Sci & Engn,Guangdong Prov Key Lab Fiber L, Guangzhou 510640, Peoples R China
[2] Nanjing Inst Future Energy Syst, Nanjing 211135, Peoples R China
[3] China Elect Technol Grp Corp, Shijiazhuang 050051, Hebei, Peoples R China
[4] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China
[5] Chinese Acad Sci, Innovat Acad Light Duty Gas Turbine, Inst Engn Thermophys, Beijing 100190, Peoples R China
来源：
MATERIALS | 2022年 / 15卷 / 15期
关键词：
n-type Bi2Te3; thermoelectric fibers; thermal drawing; Bridgman annealing; HIGH-PERFORMANCE; BI2TE3;
D O I：
10.3390/ma15155331
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
N-type bismuth telluride (Bi2Te3) based thermoelectric (TE) fibers were fabricated by thermal drawing and Bridgman annealing, and the influence of Bridgman annealing on the TE properties of n-type Bi2Te3-based TE fibers was studied. The Bridgman annealing enhanced the electrical conductivity and Seebeck coefficient because of increasing crystalline orientation and decreasing detrimental elemental enrichment. The TE performance of n-type Bi2Te3-based TE fibers was improved significantly by enhancing the power factor. Hence the power factor increased from 0.14 to 0.93 mW/mK(2), and the figure-of-merit value is from 0.11 to 0.43 at similar to 300 K, respectively.
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收藏
页数：7
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