  We investigate the electric and thermoelectric transport coefficients of
nanocomposites using the Non-Equilibrium Greens Function (NEGF) method, which
can accurately capture the details of geometry and disorder in these
structures. We consider here two dimensional (2D) channels with embedded
nanoinclusions (NIs) modelled as potential barriers of cylindrical shape and
height VB. We investigate the effect of randomness of the NIs on the
thermoelectric power factor by varying the positions, diameter, and heights of
the barriers according to a Gaussian probability distribution. We find that the
power factor shows indications of tolerance to variations in the parameters of
the NIs when the Fermi level is placed into the bands and VB approx. kBT. These
results could be experimentally relevant in the design of nanocomposites for
thermoelectric applications.
