Open AccessEnhancement Thermoelectric Properties of Cux-doped Nanostructure Bi-Sb-Te Thermoelectric Materials by Spark Plasma Sintering
Author(s) -
Zhe Chen,
Wenhua Zhang,
Rui Hu,
Xue-Long He,
Guodong Xu,
Hebo Huan,
Yao Ai Hua,
Zingway Pei,
Junhong Zhang,
XueFeng Yu,
Jing Zhou
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2160/1/012029
Subject(s) - spark plasma sintering , thermoelectric effect , materials science , thermoelectric materials , doping , dopant , nanostructure , crystallinity , electrical resistivity and conductivity , sintering , analytical chemistry (journal) , thermal conductivity , metallurgy , nanotechnology , composite material , optoelectronics , chemistry , thermodynamics , physics , engineering , chromatography , electrical engineering
Nanostructure Cu x -doped Bi 0.5 Sb 1.5-x Te 3 thermoelectric materials was successfully prepared by Mechanical alloys and spark plasma sintering. In the reasearch, the crystallinity, particle size, and chemical composition were characterized by XRD, EDS, respectively. Thermoelectric properties with a maximum ZT value up to 1.17 has been obtained at 407 K in prepared Cu 0.04 -doped Bi 0.5 Sb 1.496 Te 3 sample. The achieved higher ZT value is attributed that Cu as doping at the Sb sites introduced additional holes to enhance carrier mobility and Cu dopants interrupted the periodicity of lattice vibration to decrease lattice thermal conductivity. It is suggested that the as-prepared nanostructure Cu x -doped Bi 0.5 Sb 1.5-x Te 3 thermoelectric materials has high potential for thermoelectric energy conversion application.