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Thermoelectric Power of Sb 2 Te 3 Films
Author(s) -
Moorthy P. A. Krishna,
Shivakumar G. K.
Publication year - 1986
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170210619
Subject(s) - materials science , antimony , thermoelectric effect , atmospheric temperature range , seebeck coefficient , analytical chemistry (journal) , electrical resistivity and conductivity , composite material , metallurgy , thermal conductivity , thermodynamics , chemistry , electrical engineering , chromatography , engineering , physics
The thermoelectromotive force of vacuum deposited Sb 2 Te 3 films on glass substrates has been measured by the integral method in the temperature range 30–250 °C. The film thickness varied between 1200–9600 Å. Thick antimony pads evaporated onto the sample at both ends served as contacts. The thermoelectric power (α) is found to be positive and increases with temperature for thinner samples and at higher temperatures a steady value is achieved. Further increase in the temperature decreases the thermoelectric power. When the film thickness is increased, α decreases. This is explained as due to the reduction in intercrystalline barrier at elevated temperatures and at higher film thicknesses.