The thermoelectric effect in a semiconductor superlattice in a non-quantized electric field

Abstract

The thermoelccvic effect in a semiconductor rupcrlatlicc in a non-quantize delectric Beld is investigated for elections of the lowest muband in the Linear approamation of VT. nalytlcll expressionsfor the thermopower and the kat conductinty cocfficient are obtained as functions of the superlattice parsmeters A and d, temperature, concentration and electric field E. The results confirm the fact thar tepending on the relation berueen A and other characteristic energies of the carrier chdrge (kT, E and h/r) the camer charges cm behave either as a quasi-two-dimensional or as a three-dimensional electron gas. The prospect of using a superlanice as a good-quality and highly efficient thermoelement is also proposed