Electronic properties of intercalated single-wall carbon nanotubes and C60peapods

T Pichler, X Liu, M Knupfer, J Fink
2003 New Journal of Physics  
This paper reviews recent investigations of the electronic structure and the optical properties of intercalated single-wall carbon nanotubes (SWCNTs) and C 60 filled SWCNTs (peapods) using electron energy-loss spectroscopy (EELS) in transmission as a probe. The results from these one-dimensional nanostructures are compared to C 60 fullerides and intercalated graphite, which are well understood prototypes of carbon-based intercalation compounds. In detail, the structural changes were analysed by
more » ... es were analysed by electron diffraction and the doping level and the matrix element weighted unoccupied density of states (DOS) by an analysis of the C 1s core-level excitations. Regarding the optical properties, the intercalation gives rise to a charge transfer to the peapods (SWCNTs) which leads to the formation of a free charge carrier plasmon in the loss function which is analysed within the framework of an effective Drude-Lorentz model.
doi:10.1088/1367-2630/5/1/156 fatcat:2a35utqm4zb2lmkbajiq7ewvui