Carrier mobility in nonstoichiometric n-Bi2Te3−x Sex solid solutions

Autor:	V. A. Kutasov, P. P. Konstantinov, L. N. Luk’yanova, G. T. Alekseeva
Rok vydání:	1997
Předmět:	Electron mobility Range (particle radiation) Materials science Thermoelectric efficiency Scattering Thermoelectric effect Analytical chemistry Atmospheric temperature range Condensed Matter Physics Stoichiometry Electronic Optical and Magnetic Materials Solid solution
Zdroj:	Physics of the Solid State. 39:419-422
ISSN:	1090-6460 1063-7834
DOI:	10.1134/1.1130144
Popis:	A study has been made of the thermoelectric and galvanomagnetic properties of n-Bi2Te3−x Sex solid solutions (x=0.3 and 0.36) in the temperature range 80–300 K. The lowest carrier concentrations, (0.8–1)×1018 cm−3, were obtained by displacing the solid solution from the stoichiometric to a Te-rich composition. At such carrier concentrations, the second subband in the conduction band of n-Bi2Te3−x Sex is not filled, which results in a growth of mobility because of the absence of interband scattering, and brings about an increase of thermoelectric efficiency in the 80–120-K range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82af725a39c717b58df853b615908d28 https://doi.org/10.1134/1.1130144 Zobrazit plný text záznamu Full text from SpringerLink