Ellipsometric determination of the optical constants of C60 (Buckminsterfullerene) films
- 18 November 1991
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (21) , 2678-2680
- https://doi.org/10.1063/1.105907
Abstract
We report the first ellipsometric measurement of the fundamental optical constants (n,k) of C60 films deposited on Si(100) and Au overcoated Si(100) substrates. We obtain a highest occupied molecular orbital‐lowest unoccupied molecular orbit (HOMO‐LUMO) gap value of 2.3 eV, slightly larger than the gap values obtained from the x‐ray photoelectron spectroscopy and electron‐energy‐loss spectroscopy experiments. The structure observed in the UV is discussed in terms of single‐electron excitations across the HOMO‐LUMO gap.Keywords
This publication has 17 references indexed in Scilit:
- Critical magnetic fields in the superconducting state ofPhysical Review Letters, 1991
- Fullerenes C60 and C70 in flamesNature, 1991
- Superconductivity at 18 K in potassium-doped C60Nature, 1991
- Electronic structure of solid: Experiment and theoryPhysical Review Letters, 1991
- Solid C60: a new form of carbonNature, 1990
- Space, Stars, C 60 , and SootScience, 1988
- Elemental carbon cagesJournal of the American Chemical Society, 1988
- C60: BuckminsterfullereneNature, 1985
- Dielectric functions and optical parameters of Si, Ge, GaP, GaAs, GaSb, InP, InAs, and InSb from 1.5 to 6.0 eVPhysical Review B, 1983
- Wavelength dependence of electronic excess energy of a composition-modulated metallic mixturePhysical Review B, 1983