Enhanced thermoelectric properties of hydrothermally synthesized n-type Se&Lu-codoped Bi2Te3

• 作者: Li SU Lianjun WANG Qihao ZHANG Shijia GU Wan JIANG Xiaofang LU Xiaolei SHI Xin AI
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2020,（4）
• 所属期刊栏目: Research Article
• 页码范围: 424-431
• 页数: 8页
• 语种: 英文

摘要

N-type Se&Lu-codoped Bi2Te3 nanopowders were prepared by hydrothermal method and sintered by spark plasma sintering technology to form dense samples.By further doping Se element into Lu-doped Bi2Te3 samples,the thickness of the nanosheets has the tendency to become thinner.The electrical conductivity of Lu0.1Bi1.9Te3-xSex material is reduced with the increasing Se content due to the reduced carrier concentration,while the Seeback coefficient values are enhanced.The lattice thermal conductivity of the Lu0.1Bi1.9Te3-xSex is greatly reduced due to the introduced point defects and atomic mass fluctuation.Finally,the Lu0.1Bi1.9Te2.7Se0.3 sample obtained a maximum ZT value of 0.85 at 420 K.This study provides a low-cost and simple low-temperature method to mass production of Se&Lu-codoped Bi2Te3 with high thermoelectric performance for practical applications.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Xiaolei SHI		1	0	0.0	0.0
2	Xin AI		1	0	0.0	0.0
3	Qihao ZHANG		1	0	0.0	0.0
4	Xiaofang LU		1	0	0.0	0.0
5	Shijia GU		1	0	0.0	0.0
6	Li SU		1	0	0.0	0.0
7	Lianjun WANG		1	0	0.0	0.0
8	Wan JIANG		1	0	0.0	0.0