Theoretical modeling and improved thermoelectric properties in (111) and (001) oriented PbTe/Pb_(1-x)Eu_xTe MQWs

摘要

Theoretical modeling of ZT of (111) and (001) oriented PbTe/Pb_(1-x)Eu_xTe multiple-quantum-wells (MQWs) is carried out assuming parabolic energy bands and the constant relaxation time approximation. The model calculation for the (111) oriented MQWs is compared with the recently obtained experimental results for the Seebeck coefficient and the Hall carrier concentration. The thermoelectric properties for (001) oriented PbTe MQWs are expected to have been better thermoelectric properties than the (111) oriented PbTe MQWs.