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Title | Thermoelectric Composites on the Base of PbTe with Nanoiclusions of Colloidal Silver |
Authors |
Freik, D.
Galushchak, M. Nykyruy, L. Matkivsky, O. Khalavka, Y. |
ORCID | |
Keywords |
Thermoelectric materials Lattice thermal conductivity Nanoparticles PbTe Silver |
Type | Article |
Date of Issue | 2015 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/43193 |
Publisher | Sumy State University |
License | Copyright not evaluated |
Citation | Freik, D. Thermoelectric Composites on the Base of PbTe with Nanoiclusions of Colloidal Silver [Текст] / D. Freik, M. Galushchak, L. Nykyruy et al. // Журнал нано- та електронної фізики. — 2015. — Т.7, №4. — 04006-1. |
Abstract |
Formation of thermocouples by pressing powder of thermoelectric material with micro- and nano- size
range creates large internal borders for additional phonon scattering. However, it need not only reduce the
thermal conductivity, but also increase the Seebeck coefficient to improve the thermoelectric properties of
material. For this case, around thermoelectric grain PbTe of the size of (0.5-1.0) micrometers prompted to
create nano-channels for the stream of an electric current. In this paper was development technology of the
conductive nano-channels on the base of colloidal Silver. It was finding that the introduction of Ag nanoparticles
(size 50 nm), not only reduces the thermal conductivity, but also increases the Seebeck coefficient
after additional throttling of electrons on the barriers of Silver nanoparticles. Thermal conductivity of
(0.06-0.2) W/(m·K) has been achieved in the case of the scattering of medium-wave phonons (MWP). The
absolute value of Seebeck coefficient in these conditions increases up to 340 V/K. |
Appears in Collections: |
Журнал нано- та електронної фізики (Journal of nano- and electronic physics) |
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File | Size | Format | Downloads |
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Freik.pdf | 376.31 kB | Adobe PDF | 360409691 |
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