Open AccessMechanisms of Structure and Thermoelectric Properties of Vapor-Phase Condensates Solid Solution PbTe–Bi2Te3 on Ceramics
Author(s) -
I. S. Bylina
Publication year - 2015
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.16.1.83-92
Subject(s) - materials science , thermoelectric effect , seebeck coefficient , nucleation , crystallite , ceramic , evaporation , chemical vapor deposition , substrate (aquarium) , phase (matter) , electrical resistivity and conductivity , condensed matter physics , chemical engineering , analytical chemistry (journal) , nanotechnology , composite material , thermodynamics , thermal conductivity , metallurgy , chemistry , oceanography , physics , engineering , chromatography , geology , organic chemistry , electrical engineering
Based on analysis of AFM-images, presents the results of complex research the mechanisms of nucleation and growth processes, surface topology and thermoelectric properties of vapor-phase condensates PbTe-Bi2Te3, grown on polycrystalline ceramics at constant temperatures evaporation TE = 970 K and deposition TS = 470 K. Deposition time τ = (15-75) s, and the percentage of Bi2Te3 was 1-5 mol.%. The dependence of structural characteristics (average size of nanocrystals, their rate of change in the lateral (Dc, Dc/τ) and normal (hc, hc/τ) directions to the substrate surface) and thermoelectric parameters (electrical conductivity (σ), Hall concentration (n) and mobility media (μ) thermo-EMF (S) and thermoelectric power (S2σ)) condensates PbTe–Bi2Te3 the conditions of their receipt.