Abstract
Photoemission spectroscopy was used to compare the effects of a hydrogen or argon plasma on natural-type 2B diamond (111) surfaces, while the diamond was heated to 350°C. After the hydrogen plasma the surface exhibits a negative electron affinity, indicative of a hydrogen-terminated surface. In contrast, the argon plasma was found to result in a surface with a positive electron affinity of 1.0 eV, indicating the removal of hydrogen from the surface. Features characteristic of graphite were not observed. After reexposing the surface to a hydrogen plasma, the spectrum was identical to the spectrum obtained after the initial hydrogen plasma.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1878-1880 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 62 |
| Issue number | 16 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)