2 research outputs found

    Структура і властивості матеріалів на основі систем Ag-Pb-Sb-Te з високою термоелектричною добротністю

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    The review of works devoted to the study of thermoelectric, thermodynamic and mechanical properties of highly efficient thermoelectric materials in the system Ag-Pb (Sn) -Sb-Te. It is shown that based on them can be obtained as n-, and district branches of thermoelectric converters with parameter dimensionless thermoelectric figure of merit ZT ≈ 1.5 - 2.0.Проведено огляд робіт присвячених дослідженню термоелектричних, термодинамічних і механічних властивостей високоефективних термоелектричних матеріалів у системі Ag-Pb(Sn)-Sb-Te. Показано, що на їх основі можна отримувати як n- , так і р-вітки термоелектричних перетворювачів з параметром безрозмірної термоелектричної добротності ZT ≈ 1,5-2,0

    Crystallochemistry of defects in lead telluride films

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    The crystallochemical model of vapor-phase epitaxy of the lead telluride films has been proposed with the supposition about the simultaneous formation of singly charged, doubly charged and electroneutral Frenkel defects in the cationic sublattice. It has been shown that in spite of the large concentration of partly compensated doubly charged defects the singly charged Frenkel pairs Pbi⁺ and VPb⁻ also play an essential role in change carrier concentration in PbTe films. The results of numerical calculation agree with the available experimental data of the dependence of charge carrier's concentration in films upon the partial pressure of tellurium vapor and the deposition's temperature in the hot-wall method
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