An EELS study of fullerite — C60/C70
1991; Elsevier BV; Volume: 181; Issue: 4 Linguagem: Inglês
10.1016/0009-2614(91)80086-d
ISSN1873-4448
AutoresP.L. Hansen, P. Fallon, Wolfgang Krätschmer,
Tópico(s)Carbon Nanotubes in Composites
ResumoElectron-energy-loss spectroscopy (EELS) with a new parallel detection system is used to study the electronic structure of the solid form of C60 — fullerite. A band gap of 1.8 eV is found and transition energies of single-electron excitations are in qualitative agreement with published electronic-structure calculations for a truncated icosahedral shape of the C60 molecule. The absorption coefficient calculated from a Kramers-Kronig analysis agrees qualitatively with UV optical absorption data. The plasmon energy is found to be 25.5 eV — indicating that the electron density in fullerite is similar to that of graphite.
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