Abstract
Synchrotron-based photoelectron spectroscopy experiments are presented that address a long standing inconsistency in the treatment of the C1s core level of hydrogen terminated (1 0 0) diamond. Through a comparison of surface and bulk sensitive measurements we show that there is a surface related core level component to lower binding energy of the bulk diamond component; this component has a chemical shift of -0.16±0.05 eV which has been attributed to carbon atoms which are part of the hydrogen termination. Additionally, our results indicate that the asymmetry of the hydrogen terminated (1 0 0) diamond C1s core level is an intrinsic aspect of the bulk diamond peak which we have attributed to sub-surface carbon layers.
| Original language | English |
|---|---|
| Article number | 305001 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 28 |
| Issue number | 30 |
| DOIs | |
| State | Published - 14 Jun 2016 |
Bibliographical note
Publisher Copyright:© 2016 IOP Publishing Ltd.
Funding
We acknowledge financial support from the Australian Research Council. Measurements were performed at the Soft X-ray Beamline of the Australian Synchrotron, hydrogen termination was performed at the Melbourne Center for Nanofabrication (MCN).
| Funders | Funder number |
|---|---|
| Australian Research Council |
Keywords
- diamond (1 0 0) surface
- hydrogen-terminated diamond
- photoelectron spectroscopy