Thermoelectric properties of SnSe nanowires with different diameters.

ABSTRACT: Tin selenide (SnSe) has been the subject of great attention in the last years due to its highly efficient thermoelectricity and its possibilities as a green material, free of Pb and Te. Here, we report for the first time a thermoelectricity and transport study of individual SnSe micro- and nano-wires with diameters in the range between 130 nm and 1.15 μm. X-ray diffraction and transmission electron microscopy analyses confirm an orthorhombic SnSe structure with Pnma (62) symmetry group and 1:1 Sn:Se atomic ratio. Electrical and thermal conductivity and the Seebeck coefficient were measured in each individual nanowire using a specialized suspended microdevice in the 150-370 K temperature range, yielding a thermal conductivity of 0.55 Wm^-1 K^-1 at room temperature and ZT

SUBMITTER: Hernandez JA 

PROVIDER: S-EPMC6086875 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature