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

Thermoelectric and galvanomagnetic properties have been studied in n-Bi
2-x
Sb
x
Te
3-y-z
Se
y
S
z
and p-Bi
2-x
Sb
x
Te
3-y-z
Se
y
multicomponent solid solutions with various atomic substitutions in both sublattices of Bi
2
Te
3
. 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.