The electronic properties of functionalized SWCNTs assessed by photoemission and X-ray absorption spectroscopy

CIC nanoGUNE Seminars

Speaker

Paola Ayala. Fakultät für Physik, University of Vienna, Vienna, Austria

When

2010/09/22
14:00

Place

nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian

Add to calendar

iCal

Subscribe to Newsletter

Accessing the well known unique electronic and optical properties of single- walled carbon nanotubes (SWCNTs), their semiconducting or metallic behaviour and wall modifications is of great interest for further applications. Whether we are dealing with the inevitable interactions of nanotubes in a bundle or single doping defects, the energies of charge carriers and lattice vibrations are modified. For this reason, photoemission and x-ray absorption spectroscopy effectively allow analysing the details in modifications of the underlying basic correlation effects in the bonding environment. I will show our recent progress on how metallicity-sorting, which has recently found significant solutions, combined with high energy spectroscopy techniques can nicely disentangle the characteristic density of states of SWCNTs unambiguously. The various functionalization routes that allow modifying the electronic properties of SWCNT will also be discussed, providing a solid basis for a further insight into the influence of doping, chemical interactions on the electronic ground state and the transport properties of SWCNTs. We will analyze the charge transfer within various types of functionalized, doped, filled and functionalized metallicity-sorted SWCNTs.