title: ZT enhancement in solution-grown Sb(2-x)BixTe3 nanoplatelets.
abstract: We report a solution-processed, ligand-supported synthesis of 15-20 nm thick Sb(2-x)BixTe3 nanoplatelets. After complete ligand removal by a facile NH3-based etching procedure, the platelets are spark plasma sintered to a p-type nanostructured bulk material with preserved crystal grain sizes. Due to this nanostructure, the total thermal conductivity is reduced by 60% in combination with a reduction in electric conductivity of as low as 20% as compared to the bulk material demonstrating the feasibility of the phonon-glass electron-crystal concept. An enhancement in the dimensionless thermoelectric figure of merit of up to 15% over state-of-the-art bulk materials is achieved, meanwhile, shifting the maximum to significantly higher temperatures.
authors.affiliation: University of Hamburg, Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, Germany. scheele@chemie.uni-hamburg.de
authors.forename: Marcus
authors.initials: M
authors.lastname: Scheele
authors.forename: Niels
authors.initials: N
authors.lastname: Oeschler
authors.forename: Igor
authors.initials: I
authors.lastname: Veremchuk
authors.forename: Klaus-Georg
authors.initials: KG
authors.lastname: Reinsberg
authors.forename: Anna-Marlena
authors.initials: AM
authors.lastname: Kreuziger
authors.forename: Andreas
authors.initials: A
authors.lastname: Kornowski
authors.forename: José
authors.initials: J
authors.lastname: Broekaert
authors.forename: Christian
authors.initials: C
authors.lastname: Klinke
authors.forename: Horst
authors.initials: H
authors.lastname: Weller