Open AccessSynthesis and Properties of Highly Efficient Thermoelectric Materials Based on Lead Telluride with Antimony and Silver Impurity
Author(s) -
D. M. Freik,
S. І. Mudriy,
Ц. А. Криськов,
І. В. Горічок,
O. M. Matkіvsky,
Т. О. Семко
Publication year - 2015
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.16.1.49-54
Subject(s) - lead telluride , thermoelectric effect , thermoelectric materials , materials science , thermal conductivity , seebeck coefficient , antimony , electrical resistivity and conductivity , impurity , telluride , cadmium telluride photovoltaics , thermoelectric generator , optoelectronics , metallurgy , doping , composite material , thermodynamics , chemistry , physics , organic chemistry , quantum mechanics
The paper presents the results of research of X-ray diffraction and thermoelectric parameters (thermoelectric coefficient α, electrical conductivity σ and thermal conductivity coefficient k) of materials based on Lead Telluride: PbTe, PbTe:Sb, PbTe-Sb2Te3, Pb18Ag1Sb1Te20, Pb18Ag2Te20 and PbTe-Ag2Te. Established that the highest values of thermoelectric figure of merit have samples of PbTe:Sb (0,3 at.%) and system Pb18Ag1Sb1Te20, Pb18Ag2Te20. For PbTe:Sb is due to a significant increase of the electrical conductivity. For the other two materials is due to a increase the thermoelectric coefficient and a significant decrease of thermal conductivity compared to pure PbTe.