In:
MRS Proceedings, Springer Science and Business Media LLC, Vol. 247 ( 1992)
Abstract:
We report the optical properties of C 60 determined from the variable angle ellipsometry and near normal incidence reflection / transmission (R.T) experiments, and of M 6 C 60 from the R, T experiments. The measurements were performed on thin films (d∼1000 Å) of C 60 and M 6 C 60 deposited on both Si(100) and suprasil substrates. The onset for strong absorption across the HOMO-LUMO gap in CgQ is measured to be -2.3 eV, slightly larger than the gap values obtained from the x-ray photoelectron spectroscopy (XPS) and electron-energy-loss spectroscopy (EELS) experiments. The observed peak positions in ε 2 (ω) for M 6 C 60 and C 60 compares well with the recent band structure calculations and suggests that the M 6 C 60 compounds exhibit only a weak hybridization between the C 60 and M states.
Type of Medium:
Online Resource
ISSN:
0272-9172
,
1946-4274
DOI:
10.1557/PROC-247-367
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
1992
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