Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 70, Issue 4, Pages 387-390Publisher
SPRINGER VERLAG
DOI: 10.1007/s003390051053
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We report core-level and valence-band X-ray photoelectron spectroscopy (XPS) and carbon K near-edge X-ray-absorption fine structure spectroscopy (NEXAFS) results of plasma-pnlymerized C-60. In comparison with evaporated C-60 the C 1s peak is broader and asymmetric for the C-60 polymer and its shake-up satellites diminished. Furthermore, the features of the valence-band as well as the features of the pi* antibonding orbitals of the C-60 polymer are broader and reduced in intensity, Changes in the electronic structure are attributed to the polymerization of C-60, the post-plasma functionalization of the surface by oxygen after exposure to atmosphere, and the occurrence of amorphous carbon.
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