Abstract
We have studied the thermoelectric properties of quantum dot (QD) chain nanocomposites in which the QDs are aligned to form chains. In both the InAs/GaAs and Ge/Si systems, we use a constant relaxation time approximation to calculate and compare the electrical conductivity, Seebeck coefficient, and thermoelectric power factor for QD chains, three-dimensional ordered QD arrays, random QD arrays, and bulk GaAs or Si. Our calculations suggest that the incorporation of QD chains into a matrix increases its thermoelectric power factor by a factor of 3 (1.5) for the InAs/GaAs (Ge/Si) system.
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