Investigations of thick films of C59 doped with potassium

We investigated (C59N)2 multilayer films, intercalated with different amounts of potassium, by electron energy loss spectroscopy and by synchrotron radiation techniques. For low K exposures, valence hand photoemission shows, apart from a rigid shift towards higher binding energies of the whole spect...

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Main Authors: Marenne, I, Rudolf, P, Schiessling, J, Bruehwiler, P A, Silien, C, Auerhammer, J, Pichler, T, Golden, M S, Tagmatarchis, N, Prassides, K
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:We investigated (C59N)2 multilayer films, intercalated with different amounts of potassium, by electron energy loss spectroscopy and by synchrotron radiation techniques. For low K exposures, valence hand photoemission shows, apart from a rigid shift towards higher binding energies of the whole spectrum, two new LUMO-derived peaks, indicative of a mixture of phases. One of the doped phases still preserves the dimer structure. At K concentrations, the (C59N)2 dimer breaks up, as seen by HREELS, but the dimer phase can be recovered by distillation. C1s and K2p photoemission spectra show two K sites up to about K3C59N and one K site for higher K concentrations. (Author)
ISSN:0094-243X