Evidence for preferential reactivity of the atomic oxygen with hydrogenated diamond (111) facets |
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| Authors: | Sh. Michaelson R. Akhvlediani L. Tkach A. Hoffman |
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| Affiliation: | Schulich Faculty of Chemistry, Technion, Israel Institute of Technology, Haifa 32000, Israel |
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| Abstract: | Chemical bonding configuration of the adsorbed oxygen on diamond polycrystalline hydrogenated surface was investigated by high resolution electron energy loss spectroscopy (HR-EELS). Hot filament chemical vapor deposited diamond films with sub-micron grain size have been exposed in-situ to thermally activated atomic oxygen (AO) and annealed in ultra-high vacuum in the range of 600–900 °C. HR-EELS features comparison of as-deposited and AO exposed diamond surface as a function of thermal annealing suggests that AO preferentially adsorbs on hydrogenated (111) facets keeping hydrogenated (100) ones intact. |
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