Direct evaluation of the sp3 content in diamond-like-carbon films by XPS

Mérel, Philippe; Tabbal, M.; Chaker, Mohamed; Moisa, S.; Margot, J.

doi:10.1016/s0169-4332(98)00319-5

Cited by 642 publications

(321 citation statements)

References 18 publications

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“…These binding energy values are similar with those reported in Ref. [25,26]. It indicates that the surfaces of Si-DLC films are rich in sp 2 bonded carbon.…”

Section: X-ray Photoelecron Spectroscopy (Xps) Studiessupporting

confidence: 90%

“…5 (g)) was deconvoluted into five components at 284.4, 285.1, 286.6, 288.5 and 293.5 eV. These peak positions are assigned to the binding energy of C _ C, C-C, C-O, C _ O bonded network and π-excitation respectively [25][26][27][28][29]45]. The ratio of the C _ C to C-C bonds was similar to that of the untreated Si-DLC film shown in Fig.…”

Section: X-ray Photoelecron Spectroscopy (Xps) Studiesmentioning

confidence: 99%

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Surface energy of the plasma treated Si incorporated diamond-like carbon films

Roy

Choi

Park

et al. 2007

Diamond and Related Materials

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Surface energy and surface chemical bonds of the plasma treated Si incorporated diamond-like carbon films (Si-DLC) were investigated. The Si-DLC films were prepared by r.f. plasma assisted chemical vapor deposition using benzene and diluted silane (SiH 4 /H 2 = 10:90) as the precursor gases. The Si-DLC films were subjected to plasma treatment using various gases like N 2 , O 2 , H 2 and CF 4 . The plasma treated Si-DLC films showed a wide range of water contact angles from 13.4°to 92.1°. The surface energies of the plasma treated Si-DLC films revealed a high polar component for O 2 plasma treated Si-DLC films and a low polar component for CF 4 plasma treated Si-DLC films. The CF 4 plasma treated Si-DLC films indicated the minimum surface energy. X-ray photoelectron spectroscopy (XPS) revealed that the polarizability of the bonds present on the surface explains the hydrophilicity and hydrophobicity of the plasma treated Si-DLC films. We also suggest that the O 2 plasma treated surface can provide an excellent hemocompatible surface from the estimated interfacial energy between the plasma treated Si-DLC surface and human blood.

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“…These binding energy values are similar with those reported in Ref. [25,26]. It indicates that the surfaces of Si-DLC films are rich in sp 2 bonded carbon.…”

Section: X-ray Photoelecron Spectroscopy (Xps) Studiessupporting

confidence: 90%

Section: X-ray Photoelecron Spectroscopy (Xps) Studiesmentioning

confidence: 99%

Surface energy of the plasma treated Si incorporated diamond-like carbon films

Roy

Choi

Park

et al. 2007

Diamond and Related Materials

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“…51,60 The reasons for such a large separation between the two components are not clear, however, fitting with a smaller difference in binding energy did not give a good agreement with the experimental spectrum. A similar separation between sp 2 and sp 3 components was found in Ref.…”

Section: Figmentioning

confidence: 87%

“…The fitting with one component for oxygen-containing groups gave a 1.5± 0.1 eV difference in the binding energy of the sp 2 and sp 3 components, which is significantly larger than the differences of 0.9 eV reported for amorphous carbon 49,59 and 0.8 eV for diamondlike-carbon films. 51,60 Therefore, we excluded this fit from our consideration.…”

Section: Figmentioning

confidence: 99%

Photoemission study of onionlike carbons produced by annealing nanodiamonds

et al. 2005

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“…Gold (Au 4 7/2 f ) and copper (Cu 2 3/2 p ) lines at 84.0 and 932.6 eV, respectively, were used for calibration. To compensate for any charging effects, the main carbon peak was calibrated at 285.5 eV, a value measured on conductive diamond containing nitrogen [25][26][27] . The carbon peak and its sub peaks were studied since quantifying the oxygen can be deluding due to physisorbed water molecules or inorganic dusts that can influence the quantitative elemental analysis on the diamond surface.…”

Section: B Time Domain Thermoreflectancementioning

confidence: 99%

Influence of diamond surface termination on thermal boundary conductance between Al and diamond

Monachon

Weber

2013

Journal of Applied Physics

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The effect of diamond surface treatment on the Thermal Boundary Conductance (TBC) between Al and diamond is investigated. The treatments consist in either of the following: exposition to a plasma of pure Ar, Ar:H and Ar:O, and HNO3:H2SO4 acid dip for various times. The surface of diamond after treatment is analyzed by X-ray Photoelectron Spectroscopy, revealing hydrogen termination for the as-received and Ar:H plasma treated samples, pure sp2 termination for Ar treated ones and oxygen (keton-like) termination for the other treatments. At ambient, all the specific treatments improve the TBC between Al and diamond from 23 ± 2 MW m–2 K–1 for the as-received to 65 ± 5, 125 ± 20, 150 ± 20, 180 ± 20 MW m–2 K–1 for the ones treated by Ar:H plasma, acid, pure Ar plasma, and Ar:O plasma with an evaporated Al layer on top, respectively. The effect of these treatments on temperature dependence are also observed and compared with the most common models available in the literature as well as experimental values in the same system. The results obtained show that the values measured for an Ar:O plasma treated diamond with Al sputtered on top stay consistently higher than the values existing in the literature over a temperature range from 78 to 290 K, probably due a lower sample surface roughness. Around ambient, the TBC values measured lay close to or even somewhat above the radiation limit, suggesting that inelastic or electronic processes may influence the transfer of heat at this metal/dielectric interface.

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Direct evaluation of the sp3 content in diamond-like-carbon films by XPS

Cited by 642 publications

References 18 publications

Surface energy of the plasma treated Si incorporated diamond-like carbon films

Surface energy of the plasma treated Si incorporated diamond-like carbon films

Photoemission study of onionlike carbons produced by annealing nanodiamonds

Influence of diamond surface termination on thermal boundary conductance between Al and diamond

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