Особливості механізмів електропровідності напівпро-відникового твердого розчину Lu1 – xScxNiSb

• Main Authors: Romaka, V.V., Romaka, V.A., Stadnyk, Y.V., Romaka, L.P., Demchenko, P.Y., Pashkevych, V.Z., Horyn, A.M.
• Format: Article
• Language: English
• Published: Publishing house "Academperiodika" 2022
• Subjects: електропровiднiсть; коефiцiєнт термо-е.р.с.; рiвень Фермi; напiвпровiдник; electrical conductivity; thermopower coefficient; Fermi level; semiconductor
• Online Access: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022450

A comprehensive study of the crystal and electronic structures, thermodynamic, electrokinetic, energy, and magnetic properties of the semiconductive solid solution Lu1-xScxNiSb, x = 0 – 0.10, revealed the possibility of doping Sc atoms of different crystallographic sites depending on their concentration. This leads to the generation of structural defects of donor and/or acceptor nature and the appearance of the corresponding energy levels (bands) in the band gap єg. The ratio of ionized donors and acceptors (degree of compensation) determines the position of the Fermi level єF in Lu1-xScxNiSb. The dependence of the rate of generation of energy levels and the position of the Fermi level єF on the impurity concentration Sc, which determines the mechanism of electrical conductivity of Lu1-xScxNiSb, is established. The investigated Lu1-xScxNiSb solid solution is a promising thermoelectric material.