Drastic power factor improvement by Te doping of rare earth-free CoSb₃-skutterudite thin films.

ABSTRACT: In the present study, we have focused on the elaboration of control of Te-doped CoSb₃ thin films by RF magnetron sputtering which is an attractive technique for industrial development of thermoelectric (TE) thin films. We have successfully synthesized sputtering targets with a reliable approach in order to obtain high-quality films with controlled stoichiometry. TE properties were then probed and revealed a reliable n-type behavior characterized by poor electrical transport properties. Tellurium substitution was realized by co-sputtering deposition and allowed obtaining a significant enhancement of the power factor with promising values of PF ≈ 0.21 mW m^-1 K^-2 near room temperature. It is related to the Te doping effect which leads to an increase of the See

SUBMITTER: Bourges C 

PROVIDER: S-EPMC9054351 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature