Title :
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
Abstract :
Thermoelectric and galvanomagnetic properties have been studied in n-Bi2-xSbxTe3-y-zSeySz and p-Bi2-xSbxTe3-y-zSey 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; Bi2-xSbxTe3-y-zSey; Bi2-xSbxTe3-y-zSeySz; 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;
Conference_Titel :
Thermoelectrics, 2007. ICT 2007. 26th International Conference on
Conference_Location :
Jeju Island
Print_ISBN :
978-1-4244-2262-3
Electronic_ISBN :
1094-2734
DOI :
10.1109/ICT.2007.4569425