Thermoelectrics from silicon nanoparticles: the influence of native oxide Nils Petermann, Julia Stötzel, Niklas Stein, Victor Kessler, Hartmut Wiggers, Ralf Theissmann, Gabi Schierning and Roland Schmechel Eur. Phys. J. B, 88 6 (2015) 163 Published online: 22 June 2015 DOI: 10.1140/epjb/e2015-50594-7