Open AccessInfluence of process parameters on the electrical properties of n-type and p-type Bi2Te3-based pseudo-ternary thermoelectric materials by the hot-pressing method
Author(s) -
Qiang Lü,
Rong Jian-Ying,
Lei Zhao,
Zhang Hong-chen,
Jianmin Hu,
Xin Jiang-Bo
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3321
Subject(s) - materials science , seebeck coefficient , hot pressing , electrical resistivity and conductivity , ternary operation , thermoelectric materials , thermoelectric effect , pressing , bismuth telluride , composite material , thermal conductivity , thermodynamics , electrical engineering , computer science , physics , engineering , programming language
Seebeck coefficient and electrical conductivity of the N-type and P-type Bi 2Te3-based alloys prepared by melting/grinding/hot-pressing met hod for different process parameters (temperature and pressure of hot-pressing)were measured,and the effects of process parameters were analyzed.It has been found that the temperature and pressure of hot-pressing play very important roles in enhancing both Seebeck coefficient and electrical conductivity of the Bi2Te3-based alloys.The phenomena are different from those of Bi2Te3 single cry stal and its oriented crystal in the electrical properties.Better electrical properties may be obtained.