Abstract
High-resolution electron energy loss spectroscopy (HREELS) in reflection geometry was used to probe the surface of K 3 C 60 multilayer films as well as C 60 3- monolayers adsorbed on Ag(1 1 1) and Cu(1 1 1). The -3 charge state of the adsorbed fullerenes was obtained by distilling K-saturated C 60 monolayers. We found that roughly 2 electrons are donated by the K atoms on Ag(1 1 1) and slightly less than 1.5 electron in the case of Cu(1 1 1), the charge difference being provided by the metallic substrates. The surface of the K 3 C 60 multilayer films has a charge state of about -1.5 and is thus underdoped.
| Original language | English |
|---|---|
| Pages (from-to) | 478-482 |
| Number of pages | 5 |
| Journal | Applied Surface Science |
| Volume | 237 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - 15 Oct 2004 |
| Externally published | Yes |
Keywords
- C
- Fullende
- HREELS
- Phonon
- Potassium
- Surface charge