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Article
Synthesis and Analyses of Thermoelectric Lead Telluride
Author(s)
Dmytro Freik1, Rasit Ahiska2, Igor Gorichok1, Lyubomyr Nykyruy1, Natalia Dykun1, Kivilcim Aktas3, Selim Acar3 and Gunay Ahiska4
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DOI:10.17265/2161-6221/2013.01.005
Affiliation(s)
1. Physicochemical Institute, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine 2. Electronic and Computer Engineering Department, Faculty of Technology, Gazi University, Ankara, Teknikokullar 06500, Turkey 3. Faculty of Sciences, Physics Department, Gazi University, Ankara 06500, Turkey 4. Ankara University, Science Faculty, Department of Physics, Ankara
ABSTRACT
The influence of chemical composition effects, modes of synthesis, pressing on the structural states and electrical qualities of lead telluride has been investigated. The analyses indicated that thermoelectric parameters of the investigated materials depend on technological factors. The results revealed that conductivity is n-type in stoichiometric composition equilibrium and lead-excess states, while conductivity is p-type in tellurium-excess states. The maximum value of the Seebeck coefficient, which characterizes the thermoelectric materials, was obtained at d = 0.8-1.0 mm for powder fractions and 0.75-1.0 GPa for pressed.
KEYWORDS
Lead telluride, synthesis, thermoelectric materials, Seebeck coefficient.
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