Point defects and mechanisms for the formation of thermoelectrical solid solutions PbTe-Ві2Te3
Year: 2012
Type: article
Abstract: An analysis of the concentration and temperature dependencies of thermoelectrical parameters of the solid solutions n-PbTe-Ві 2 Te 3 and p-PbTe-Ві 2 Te 3 is presented.Two mechanisms for the formation of solid solutions based on PbTe have been considered within the framework of the crystal-quasi-chemical formalism: the substitution of bismuth ions at lead positions + Pb Bi with appearance of cation vacancies 2- Pb V (І) or neutral interstitial tellurium atoms 0 i Te (ІІ).The dependencies of the Hall concentration and the concentration of point defects on the composition of the solid solution and the initial deviation from stoichiometry in the matrix were calculated.Lead telluride / Solid solution / Point defects / Crystal-quasi-chemical formulae / Mechanism for the formation of defects Точкові дефекти і механізми утворення термоелектричних твердих розчинів PbTe-Ві 2 Te 3 Дмитро ФРЕЇК 1 *, Лілія ТУРОВСЬКА 1 , Володимира БОЙЧУК 1 1 Прикарпатський національний університет імені Василя Стефаника, вул.Шевченка 57, 76018 м.Івано-Франківськ, Україна * Контактна особа.Тел.
Source: Chemistry of Metals and Alloys
DOI: 10.30970/cma5.0199
Authors: Dmytro FREIK, Liliya TUROVSKA, Volodymyra BOYCHUK
Institution: Vasyl Stefanyk Carpathian National University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2999378624