Optimization of multicomponent thermoelectrics based on Bi2Te3 in the range below and above room temperature

Author

Lukyanova, L.N. ; Kutasov, V.A. ; Konstantinov, P.P. ; Popov, V.V. ; Isachenko

Author_Institution

Ioffe Phys. Inst., Russian Acad. of Sci., St. Petersburg

fYear

2007

fDate

3-7 June 2007

Firstpage

67

Lastpage

70

Abstract

Thermoelectric and galvanomagnetic properties have been studied in n-Bi_2-xSb_xTe_3-y-zSe_yS_z and p-Bi_2-xSb_xTe_3-y-zSe_y multicomponent solid solutions with various atomic substitutions in both sublattices of Bi₂Te₃. Anisotropy of the constant energy surface and charge carrier scattering was determined within the framework of a many-valley-model of energy spectrum using isotropic and anisotropic scattering mechanism for compositions of solid solutions with higher figure-of-merit.

Keywords

antimony compounds; bismuth compounds; galvanomagnetic effects; selenium compounds; solid solutions; tellurium compounds; thermoelectricity; Bi_2-xSb_xTe_3-y-zSe_y; Bi_2-xSb_xTe_3-y-zSe_yS_z; atomic substitutions; charge carrier scattering; constant energy surface; energy spectrum; galvanomagnetic property; multicomponent solid solutions; multicomponent thermoelectrics; Anisotropic magnetoresistance; Bismuth; Reactive power; Scattering; Solids; Tellurium; Temperature dependence; Temperature distribution; Thermal conductivity; Thermoelectricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 2007. ICT 2007. 26th International Conference on

Conference_Location

Jeju Island

ISSN

1094-2734

Print_ISBN

978-1-4244-2262-3

Electronic_ISBN

1094-2734

Type

conf

DOI

10.1109/ICT.2007.4569425

Filename

4569425