Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

The synthesis, structure, and electrical characterization of (SnSe)(1.2)TiSe2

 
: Merrill, D.R.; Moore, D.B.; Ditto, J.; Sutherland, D.R.; Falmbigl, M.; Winkler, M.; Pernau, H.F.; Johnson, D.C.

:

European journal of inorganic chemistry (2015), No.1, pp.83-91
ISSN: 1434-1948
ISSN: 1099-0682
National Science Foundation NSF
DMR-1266217
English
Journal Article
Fraunhofer IPM ()
layered compounds; thin films; electronic structure; thermoelectric materials; charge transfer

Abstract
(SnSe)(1.2)TiSe2 was found to self-assemble from a precursor containing modulated layers of Sn-Se and Ti-Se over a surprisingly large range of layer thicknesses and compositions. The constituent lattices form an alternating layer superstructure with rotational disorder present between the layers. This compound was found to have the highest Seebeck coefficient measured for analogous TiX2 containing misfit layered compounds to date, suggesting potential for low-temperature thermoelectric applications. Electrical characterization suggests that electrons transferred from SnSe to TiSe2 are responsible for the higher carrier concentration observed relative to bulk TiSe2. The transfer of charge from one constituent to the other may provide a mechanism for doping layered dichalcogenides for variou s applications without negatively affecting carrier mobility.

: http://publica.fraunhofer.de/documents/N-331996.html