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DS: Dünne Schichten

DS 24: Postersitzung

DS 24.53: Poster

Donnerstag, 26. März 1998, 15:00–19:00, PF A

Thermal Desorption and Photoelectron Spectroscopy of Fullerene Films Containing Endohedral Li@C60 — •Christian Kusch, Nela Krawez, Ralf Tellgmann, Bernd Winter, and Eleanor E. B. Campbell — Max-Born-Institut, Rudower Chaussee 6, 12489 Berlin

Thermal desorption spectroscopy (TDS) and X-ray photoelectron spectroscopy (XPS) has been carried out on thin fullerene films containing endohedral Li@C60 produced by low energy ion bombardment. The desorption properties of the films as well as the photoemission were studied as a function of the film thickness, ion energy and ion dose. The results provide strong corroborative evidence for the endohedral nature of the Li-containing species and also clearly indicate the presence of Li2@C60 in the films. The binding energy in these films is significantly larger than in pure C60 films and evidence of degradation of the fullerenes is seen at high ion energies and/or large ion doses.