In-plane thermoelectric properties of horizontally aligned InAs/GaAs quantum dot superlattices

The thermoelectric properties of aligned quantum dot chains are calculated taking in account the change in band structure due to quantum size effects. From the calculated band structure, the Seebeck coefficient and electrical conductivity are calculated in a constant relaxation time approximation (CRTA). The power factor is plotted as a function of the size and spacing of dots and an increase is shown in the power factor for decreasing dot size. The net power factor is calculated using a parallel conductor model. The results are compared to the case of randomly spaced dots which have a power factor calculated using an effective resistance model.Copyright © 2006 by ASME