The thermoelectric properties in one- and two-dimensional silicon and germanium structures have been investigated using first-principle density functional techniques and linear response for the thermal and electrical transport. We have considered here the two-dimensional silicene and germanene, together with nano-ribbons of different widths. For the nano-ribbons, we have also investigated the possibility of nano-structuring these systems by mixing silicon and germanium. We found that the figure of merit at room temperature of these systems is remarkably high, up to 2.5.
@article{arxiv.1310.0971,
title = {Thermoelectric properties of atomic-thin silicene and germanene nano-structures},
author = {K. Yang and S. Cahangirov and A. Cantarero and A. Rubio and R. D'Agosta},
journal= {arXiv preprint arXiv:1310.0971},
year = {2015}
}