Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
| Autor: | Gonzalo Alba, M. Pilar Villar, Rodrigo Alcántara, Javier Navas, Daniel Araujo |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nanomaterials, Vol 10, Iss 6, p 1193 (2020) |
| Druh dokumentu: | article |
| ISSN: | 10061193 2079-4991 |
| DOI: | 10.3390/nano10061193 |
| Popis: | Diamond surface properties show a strong dependence on its chemical termination. Hydrogen-terminated and oxygen-terminated diamonds are the most studied terminations with many applications in the electronic and bioelectronic device field. One of the main techniques for the characterization of diamond surface terminations is X-ray photoelectron spectroscopy (XPS). In this sense, the use of angle-resolved XPS (ARXPS) experiments allows obtaining depth-dependent information used here to evidence (100)-O-terminated diamond surface atomic configuration when fabricated by acid treatment. The results were used to compare the chemistry changes occurring during the oxidation process using a sublayer XPS intensity model. The formation of non-diamond carbon phases at the subsurface and higher oxygen contents were shown to result from the oxygenation treatment. A new (100) 1 × 1:O surface reconstruction model is proposed to explain the XPS quantification results of O-terminated diamond. |
| Databáze: | Directory of Open Access Journals |
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