Resonant Raman scattering of hydrogenated amorphous carbon: Evidence for π-bonded carbon clusters

Ramsteiner, M.; Wagner, J.
October 1987
Applied Physics Letters;10/26/1987, Vol. 51 Issue 17, p1355
Academic Journal
Resonant Raman spectroscopy has been used to study amorphous hydrogenated carbon films. For films containing both sp2 and sp3 bonded carbon a well-defined high-frequency shift of the main Raman peak is observed with increasing exciting photon energy. This shift is interpreted in terms of scattering from π-bonded carbon clusters which is resonantly enhanced for incident photon energies approaching the π–π* resonance.


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