The effect of hydrogen addition in argon-acetylene plasma on the structure of amorphous carbon films

Marcinauskas, Liutauras; Černauskas, Marius; Milieška, Mindaugas; Reso, Denis

doi:10.1016/j.jnoncrysol.2017.03.021

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…It should be also noted that the region 1100-1150 cm -1 and 1430-1470 cm -1 were related to the trans-polyacetylene segments at the grain boundaries [98]. The peaks ~1060 cm -1 and ~1180 cm -1 also have been reported for the nanocrystalline phase of carbon [99]. The sp 2-C phase or the G band (1560 cm -1 ) from the in-plane stretching mode of carbon is observed only when the deposition time is high at 30 s [100,101].…”

Section: Deposition On Si Substratesmentioning

confidence: 72%

Applicability of Atmospheric Pressure Plasma Jet (APPJ) Discharge for the Reduction in Graphene Oxide Films and Synthesis of Carbon Nanomaterials

Kumar

Ibaceta-Jaña

Maticuic

et al. 2021

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Atmospheric pressure plasma jets (APPJ) are widely used in industry for surface cleaning and chemical modification. In the recent past, they have gained more scientific attention especially in the processing of carbon nanomaterials. In this work, a novel power generation technique was applied to realize the stable discharge in N2 (10 vol.% H2) forming gas in ambient conditions. This APPJ was used to reduce solution-processed graphene oxide (GO) thin films and the result was compared with an established and optimized reduction process in a low–pressure capacitively coupled (CCP) radiofrequency (RF) hydrogen (H2) plasma. The reduced GO (rGO) films were investigated by Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Effective deoxygenation of GO was observed after a quick 2 s treatment by AAPJ. Further deoxygenation at longer exposure times was found to proceed with the expense of GO–structure integrity. By adding acetylene gas into the same APPJ, carbon nanomaterials on various substrates were synthesized. The carbon materials were characterized by Raman spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) analyses. Fullerene-like particles and graphitic carbon with short carbon nanotubes were detected on Si and Ag surfaces, respectively. We demonstrate that the APPJ tool has obvious potential for the versatile processing of carbon nanomaterials.

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Section: Deposition On Si Substratesmentioning

confidence: 72%

Applicability of Atmospheric Pressure Plasma Jet (APPJ) Discharge for the Reduction in Graphene Oxide Films and Synthesis of Carbon Nanomaterials

Kumar

Ibaceta-Jaña

Maticuic

et al. 2021

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“…However, Ti-based ternary nitride coatings have shown low wear resistance, which has drawn attention to amorphous carbon coatings with low friction coefficients and chemical inertness [11][12][13]. The excellent properties of amorphous carbon coatings appear in the form of a mixture of hybrid bonds (e.g.…”

Section: Introductionmentioning

confidence: 99%

Surface amorphisation of TiZrN coatings by laser carburisation

Kim

Hong

Choi

et al. 2018

Advances in Applied Ceramics

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The enhancement of wear resistance by laser carburisation on TiZrN coatings was investigated in terms of bond state. Graphite paste was used to cover the TiZrN coatings and then pulsed laser ablation was used to solidify the carbon. Tribometer test showed that the friction coefficient was reduced from 0.64 to 0.17 after laser carburisation. The doped carbon was analysed as a mixture with sp 2 C and sp 3 C bonds using an X-ray photoelectron spectroscopy depth profile. The sp 2 /sp 3 ratio was 2.29 at the surface and increased up to 2.91 in the depth direction. To verify the effect of the hybrid bonds on the atomic order, annealing was carried out to the carburised specimens. As the ratio increased to 3.28, graphitisation resulting in transition from sp 3 to sp 2 was confirmed, and variation in the lattice structure was demonstrated by a reduction in the lattice constant (4.45 Å to 4.40 Å) using Rietveld refinement.

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Structural and Mechanical Analysis of APCVD Deposited Diamond-Like Carbon Thin Films

Ghadai

Das

Kalita

et al. 2020

Silicon

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The effect of hydrogen addition in argon-acetylene plasma on the structure of amorphous carbon films

Cited by 4 publications

References 40 publications

Applicability of Atmospheric Pressure Plasma Jet (APPJ) Discharge for the Reduction in Graphene Oxide Films and Synthesis of Carbon Nanomaterials

Applicability of Atmospheric Pressure Plasma Jet (APPJ) Discharge for the Reduction in Graphene Oxide Films and Synthesis of Carbon Nanomaterials

Surface amorphisation of TiZrN coatings by laser carburisation

Structural and Mechanical Analysis of APCVD Deposited Diamond-Like Carbon Thin Films

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