The interaction of oxygen and hydrogen on a diamond C(111) surface: a synchrotron radiation photoemission, LEED and AES study

Klauser, Ruth; Chen, Jin‐Ming; Chuang, T. J.; Chen, L.M.; Shih, Ming‐Chang; Lin, J.‐C.

doi:10.1016/0039-6028(96)00673-5

Cited by 33 publications

(21 citation statements)

References 36 publications

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“…[10][11][12][13][14] On the other hand, oxidized diamond has positive electron affinity, and it has been recently shown that the electron affinity of diamond can be adjusted by appropriate variation of hydrogen and oxygen concentration on its surface. 12,15,16 Schematic mechanisms of reactions of oxygen activated by a hot ͑1200-1800°C͒ filament, with clean and hydrogenated diamond surfaces were discussed on the basis of high-resolution electron energy loss spectroscopy ͑HREELS͒ measurements, 1,2,6,7,9 valence band photoemission, 17 Rutherford backscattering, 4,5 infrared spectroscopy 18 and other experimental techniques. From these studies, different reaction products were claimed to form on the substrate surface, including ether-, peroxide-, carbonyl-, and hydroxyl-type bonding.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of low-energy electron stimulated desorption of O− from hydrogenated and hydrogen-free diamond surfaces exposed to activated oxygen

Laikhtman

Coat

Hamou

et al. 2002

The Journal of Chemical Physics

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Articles you may be interested inClarification of oxygen bonding on diamond surfaces by low energy electron stimulated desorption and high resolution electron energy loss spectroscopy Decay of secondary electron emission and charging of hydrogenated and hydrogen-free diamond film surfaces induced by low energy electronsIn this work we report on a study of the mechanism of O Ϫ electron stimulated desorption ͑ESD͒ from hydrogenated and hydrogen-free polycrystalline diamond films exposed to thermally activated oxygen for incident electron energies in the 4 -22 eV range. Two types of experiments were carried out in order to assess the nature of the ESD processes: ͑i͒ total O Ϫ and H Ϫ yields as a function of incident electron energy and ͑ii͒ kinetic-energy distribution ͑KED͒ of O Ϫ desorbed from the hydrogen-free diamond surface. The discussed ESD mechanism is referred to the information obtained from x-ray photoelectron spectroscopy, near-edge x-ray absorption fine structure, and core level H ϩ photodesorption measurements which reveal formation of CvO and C-O-C bonds on the hydrogen-free diamond surface, and CvO and C-O-H bonds on the hydrogenated one. Based on the maximum kinetic-energy value of O Ϫ and the ESD threshold measured for hydrogen-free surface, all low-energy ͑5-10 eV͒ O Ϫ ions are attributed to desorption by the dissociative electron attachment ͑DEA͒ to C-O-C, while DEA to CvO occurs at the incident electron energy higher than ϳ10 eV. O Ϫ ESD from the hydrogenated diamond surface exposed to thermally activated oxygen is a more complicated process. Its threshold is substantially higher than for hydrogen-free diamond, and the line shape of the ESD yield curve is very similar to that of chemisorbed CO molecules. Several reaction pathways leading to production of O Ϫ by DEA are discussed for this sample. At incident electron energies higher than ϳ15 eV, O Ϫ ESD proceeds also via dipolar dissociation processes for both hydrogenated and hydrogen-free diamond surfaces.

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Section: Introductionmentioning

confidence: 99%

Mechanism of low-energy electron stimulated desorption of O− from hydrogenated and hydrogen-free diamond surfaces exposed to activated oxygen

Laikhtman

Coat

Hamou

et al. 2002

The Journal of Chemical Physics

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“…On the other hand, oxidized diamond has a positive electron affinity (PEA), and it has been recently shown, that the electron affinity of diamond can be adjusted by an appropriate variation of hydrogen and oxygen concentrations on its surface [13]. Schematic mechanisms of reactions of oxygen activated by a hot (1200-1800 C) filament with diamond surfaces were discussed on the basis of high resolution electron energy loss spectroscopy measurements (HREELS) [1,2,[5][6][7], valence band photoemission [14], and other experimental techniques. From these studies, different reaction products were claimed to form on the substrate surface, including ether-, peroxide-, carbonyl-, and hydroxyl-type bonding.…”

mentioning

confidence: 99%

Interaction of Thermally Activated and Molecular Oxygen with Hydrogenated and Hydrogen-Free Diamond Film Surfaces: Chemical Reactivity and Electron Emission Properties

Laikhtman¹,

Hoffman²

2002

phys. stat. sol. (a)

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“…To confirm the proposed EBIE mechanism we performed an experiment based on the fact [46] that the C-C bonds are modified by hydrogen which reconstructs and stabilizes the {111} surface. We therefore performed H 2 O EBIE of (001) and (111) oriented diamond in the presence of NH 3 gas, where the role of the NH 3 is to supply an excess of hydrogen radicals to terminate the (111) planes.…”

mentioning

confidence: 99%

Dynamic Pattern Formation in Electron-Beam-Induced Etching

et al. 2015

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The interaction of oxygen and hydrogen on a diamond C(111) surface: a synchrotron radiation photoemission, LEED and AES study

Cited by 33 publications

References 36 publications

Mechanism of low-energy electron stimulated desorption of O− from hydrogenated and hydrogen-free diamond surfaces exposed to activated oxygen

Mechanism of low-energy electron stimulated desorption of O− from hydrogenated and hydrogen-free diamond surfaces exposed to activated oxygen

Interaction of Thermally Activated and Molecular Oxygen with Hydrogenated and Hydrogen-Free Diamond Film Surfaces: Chemical Reactivity and Electron Emission Properties

Dynamic Pattern Formation in Electron-Beam-Induced Etching

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