Thermoelectric Nanocomposite Materials Based on Doped Lead Telluride (Review)
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 1
Abstract
A review of the problems of obtaining and research complex thermoelectric properties of composite materials doped Update the various elements of the periodic table of lead telluride semiconductor promising compound for medium temperature region (500-850) K. Found that the doping of lead telluride elements Na and K, in the content of more than 0.5 at.% Observed the formation of nano-sized particles, and the maximum value of the thermoelectric figure of merit (ZT) for PbTe: Na1, 75 at.% 1.6. When doped Lead Telluride III elements of the periodic table form resonant states within the allowed zones, resulting in a significant increase in thermopower, the maximum value of which is 360 μV/K and ZT = 1,6. When doping Sb and Bi nanoparticles are formed that contribute to strong scattering by acoustic phonons, which contributes to a significant decrease in thermal conductivity. When doped PbTe La and I formed a very small donor states, so each dopant atom adds one electron in the conduction band, in general ZT values for these materials is 1.2. When europium doped PbTe formed nanoparticles clearly improves thermal conductivity that varies (1,4-2,4) W/m•K.
Authors and Affiliations
O. S. Krunutcky
Keywords
Related Articles
- EP ID EP294482
- DOI -
- Views 85
- Downloads 0
Features of Technology for Obtaining Polymer Composite Materials Based on Polytetrafluoroethylene (Review)
The experience of many theoretical and practical works concerning the technology of PTFE-composites formation has been analyzed and systematized. The peculiarity of the work consists in the fact that PTFE-composites rein...
The Density of MoSi2 Electron States for the Amorphous Film
The density of MoSi2 electron states for the amorphous film has been calculated. An electron states at the top of valence band for this material are provided d electrons of molybdenum, p electrons of silicon and p electr...
The Development of the Atomic Theory of the Formation of a New Phase in Adsorbirivannyh Layers in an External Electric Field
The article deals with the nucleation rate in the development of the atomic theory. The expression for the calculation of heterogeneous nucleation rate in adsorbed layers in an external electric field, which allows for t...
Dissipative Structures and Fractal Approach to the Formation of Non-Crystalline States
Found that the formation of fractal dissipative structures in non-crystalline solids associated with the creation of self-consistent fields of soft atomic configurations and thermal behavior of such structure-sensitive c...
Comparative Analysis of the Definition of StressState of Epoxy Compoundsby Hydrostatic Shrinkage and Tenzometric Deformation
The comparative analysis of definition of stress state of epoxy compounds by hydrostatic shrinkage and tensometric deformationhas been done. The results of the shrinkage coefficient depending on the selected calculation...