First principles density functional calculations for the La(Ru,Rh)4Sb12 system reveal a multi-valley conduction band structure with highly anisotropic, heavy mass band minima. Analysis of these results using kinetic transport theory yields high n-type thermopower above 150 μV/K in the technologically important range 150-300 K with doping in the mid 1019 cm-3 range. The calculations also show evidence for weak Ru-Rh alloy scattering implying that reasonable mobilities are possible if La-filling can be controlled.
|Number of pages||3|
|Journal||International Conference on Thermoelectrics, ICT, Proceedings|
|State||Published - 1999|
|Event||18th International Conference on Thermoelectrics (ICT'99) - Baltimore, MD, USA|
Duration: Aug 29 1999 → Sep 2 1999