On the thermoelectric properties of Nb-doped SrTiO epitaxial thin films.

The exploration for thermoelectric thin films of complex oxides such as SrTiO-based oxides is driven by the need for miniaturized harvesting devices for powering the Internet of Things (IoT). However, there is still not a clear consensus in the literature for the underlying influence of film thickness on thermoelectric properties. Here, we report the fabrication of epitaxial thin films of 6% Nb-doped SrTiO on (001) (LaAlO)(SrAlTaO) (LSAT) single crystal using pulsed laser deposition (PLD) where the film thickness was varied from 2 nm to 68 nm.