Academic Journal
X-ray quantification of oxygen groups on diamond surfaces for quantum applications
| العنوان: | X-ray quantification of oxygen groups on diamond surfaces for quantum applications |
|---|---|
| المؤلفون: | Nikolai Dontschuk, Lila Rodgers, Jyh-Pin Chou, David Evans, Kane O'Donnell, H Johnson, Anton Tadich, Alex Schenk, A Gali, Nathalie De Leon, Alastair Stacey |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Physical chemistry not elsewhere classified, Other physical sciences not elsewhere classified, DFT, NEXAFS, XPS, diamond surface for NV centres, oxygen terminated diamond, surface spectroscopy |
| الوصف: | Identifying the surface chemistry of diamond materials is increasingly important for device applications, especially quantum sensors. Oxygen-related termination species are widely used because they are naturally abundant, chemically stable, and compatible with stable nitrogen vacancy centres near the diamond surface. Diamond surfaces host a mixture of oxygen-related species, and the precise chemistry and relative coverage of different species can lead to dramatically different electronic properties, with direct consequences for near-surface quantum sensors. However, it is challenging to unambiguously identify the different groups or quantify the relative surface coverage. Here we show that a combination of x-ray absorption and photoelectron spectroscopies can be used to quantitatively identify the coverage of carbonyl functional groups on the { 100 } diamond surface. Using this method we reveal an unexpectedly high fraction of carbonyl groups ( > 9%) on a wide range of sample surfaces. Furthermore, through a combination of ab initio calculations and spectroscopic studies of engineered surfaces, we reveal unexpected complexities in the x-ray spectroscopy of oxygen terminated diamond surfaces. Of particular note, we find the binding energies of carbonyl-related groups on diamond differs significantly from other organic systems, likely resulting in previous misestimation of carbonyl fractions on diamond surfaces. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | 10779/rmit.27578355.v1 |
| الاتاحة: | https://figshare.com/articles/journal_contribution/X-ray_quantification_of_oxygen_groups_on_diamond_surfaces_for_quantum_applications/27578355 |
| Rights: | CC BY 4.0 |
| رقم الانضمام: | edsbas.2064A393 |
| قاعدة البيانات: | BASE |
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