  We present an investigation of the thermoelectric properties of cubic
perovskite SrTiO3. The results are derived from a combination of calculated
transport functions obtained from Boltzmann transport theory in the constant
scattering time approximation based on the electronic structure and existing
experimental data for La-doped SrTiO3. The figure of merit ZT is modeled with
respect to carrier concentration and temperature. The model predicts a
relatively high $ZT$ at optimized doping, and suggests that the $ZT$ value can
reach 0.7 at T = 1400 K. Thus $ZT$ can be improved from the current
experimental values by carrier concentration optimization.
