Thermoelectric Properties and Defect Subsystem Vapor-Phase Condensates Tin Telluride on Glass-Ceramic Substrates
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 1
Abstract
Investigated the thermoelectric properties of SnTe thin films with thickness ( 40-900 ) nm obtained by condensation of vapor on the high vacuum on substrates of glass ceramics under different growing technological factors : evaporation temperature Тe and Тs deposition and pressure of tellurium РТе2. Showing that elected the conditions for receiving condensate has only p-type conductivity and it is characterized by a large concentration of carriers (1020 -1021 )см-3. Established trend in the changes of the kinetic coefficients (conductivity σ, Seebeck coefficient S, thermoelectric power S2σ, carrier concentration P and mobility of carriers μ) condensates with thickness d and the variable Тs , Тe, РТе. The obtained experimental results are explained by the peculiarities of the defect subsystem of point defects, dominant among which are two- and four- charge vacancies stanum, the ratio between them determines the full range of properties under different conditions of their formation. Determined that the thin-film condensation tin telluride unlike bulk samples have high Seebeck coefficient S ≈ 80 μW/К та S2σ ≈ 18 μW/К2cm, which makes them perspective for use of p-branches in thermoelectric micromodules.
Authors and Affiliations
I. I. Chav'yak, L. Y. Mezhylovska, V. I. Makovyshyn, V. V. Prokopiv
Keywords
Related Articles
- EP ID EP297340
- DOI -
- Views 67
- Downloads 0
The Peculiarities of Young's Modulus Surfaces of Cubic Single Crystals Formation
The analysis of the elastic properties of some metals, semiconductors and alkali halides was carried out. The features of Young's modulus characteristic surfaces formation were revealed. Extreme values of Young's modulus...
Surface Layers and Thermoelectric Properties of Vapor-Phase Condensation LAST Pb18Ag2-xSbxTe20 on Mica
The thermoelectric properties of thin films Pb18Ag2-xSbxTe20, obtained by condensation of vapor on the high vacuum on mica substrate are researched. Based on a two-layer model Petrits are founded electrical parameters of...
Peculiarities of Non-Stationary Temperature Distribution of Optical Non-Transparent Anisotropic Thermoelement at Impulse Ray Excitement
The solutions of non-stationary equation of thermoconductivity for the optical non-transparent thermoelement at impulse ray excitement are presented in the paper for two time ranges: when the ray current falls (0<t <t) a...
Peculiarities in WC and W2C Eutectic Phases Dissolution in Interfacial Zones of Composites
Annotation: The structural and phase composition of dissolution-and-diffusion interfacial zones at the particle-matrix interfaces of the composites reinforced with W–C particles infiltrated by a molten iron-base binder h...
Energy of Substitution of Anions and Cations in Zinc and Cadmium Telluride
Energy substitution of cations and anions in ZnTe i CdTe by atoms from first and seventh group of the periodic table were calculated using the method of bonding orbitals. Based on the results conclusions about the most l...