Influence of Ar/C2H2 ratio on the structure of hydrogenated carbon films

Marcinauskas, Liutauras; Grigonis, A.; Valincius, Vitas

doi:10.1016/j.jnoncrysol.2009.05.009

Cited by 13 publications

(12 citation statements)

References 31 publications

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“…The peaks at 2920 cm −1 and at 2850 cm −1 were attributed to the sp 3 asymmetric and symmetric stretching modes of CH 2 , respectively [19,20]. These peaks disappeared after irradiation with a higher intensity (Fig.…”

Section: Resultsmentioning

confidence: 94%

“…3 B3-5). The RS spectra of DLC films were fitted to determine the D and G peaks position, the full width at half-maxima of the D (∆D) and G (∆G) bands, and the integral intensity ratio between the D and G peaks (I D /I G ) ( Table 2) [18,19]. The Gaussian fitting results demonstrated that the G peak narrowed (∆G = 121 cm −1 ) and shifted to the higher wave numbers by 53 cm −1 (to 1582 cm −1 ), and the (I D /I G ) ratio increased from 0.38 to 1.38 ( Table 2).…”

Section: Resultsmentioning

confidence: 99%

“…The Gaussian fitting results demonstrated that the G peak narrowed (∆G = 121 cm −1 ) and shifted to the higher wave numbers by 53 cm −1 (to 1582 cm −1 ), and the (I D /I G ) ratio increased from 0.38 to 1.38 ( Table 2). The films can be called a mixture of DLC/GLC with the glassy carbon phase inserts [2,19].…”

Section: Resultsmentioning

confidence: 99%

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Modification of the amorphous carbon films by the ns-laser irradiation

Grigonis¹,

Marcinauskas²,

Vinciūnaitė³

et al. 2011

Open Physics

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Abstract:The effect of a nanosecond laser irradiation of thin (60 and 145 nm) amorphous, diamond-like carbon films deposited on Si substrate by an ion beam deposition (IBD) from pure acetylene and acetylene/hydrogen (1:2) gas mixture was analyzed in this work. The films were irradiated with the infrared (IR) and ultraviolet (UV) radiation of the nanosecond Nd:YAG lasers working at the first (1.16 eV) and the third (3.48 eV) harmonics, using a multi-shot regime. The IR laser irradiation stimulated a minor increase in the fraction of sp 2 bonds, causing a slight decrease in the hardness of the films and initiated SiC formation. Irradiation with the UV laser caused the formation of carbides and increased hydrogenization of the Si substrate and the fraction of sp 2 sites. Spalliation and ablation were observed at a higher energy density and with a large number of laser pulses per spot.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Modification of the amorphous carbon films by the ns-laser irradiation

Grigonis¹,

Marcinauskas²,

Vinciūnaitė³

et al. 2011

Open Physics

Self Cite

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“…Details about this technique are disclosed in Refs. [14,15]. The ratio of Ar/C 2 H 2 varied in the range of 1555; the arc voltage was 39 V, the arc current 25 A, the deposition time 150 s, and the distance between plasma torch outlet and sample 0.005 m.…”

Section: Methodsmentioning

confidence: 99%

“…This is because the obtained large diameter granules at low Ar/C 2 H 2 ratios in oxygen plasma are etched from all sides, and for this reason their diameter naturally decreases. When Ar/C 2 H 2 ratio increases, the obtained microgranules surface becomes smaller in diameter, because they and the inner surface layers are etched; therefore, the small granules disappear, and during that time, new microgranules are formed [14].…”

Section: Methodsmentioning

confidence: 99%

Influence of the Oxygen Plasma Treatment on Carbon Electrode and Capacity of Supercapacitors

2014

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Amorphous carbon electrodes were deposited using atmospheric pressure plasma torch from the mixture of argon and acetylene gases on the stainless steel substrates. The ratio of Ar/C2H2 was in the range of 1555. The deposited coatings were immersed in low pressure oxygen plasma for 1 min. Scanning electron microscopy images show that when Ar/C2H2 ratio increases from 15 to 55, the electrodes surface roughness decreases. The Raman scattering spectroscopy results indicated that the ID/IG ratio decreases from 2.04 to 1.35. It was observed that with the increase of Ar/C2H2 ratio from 15 to 55, the capacity of supercapacitor increases from 16 mF to 36 mF. The electric capacity of capacitors has increased up to 7 times after their exposure in oxygen plasma.

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Hydro‐carbon material design in a capacitively coupled radio‐frequency discharge

Mitic

Coussan

Martin

et al. 2017

Plasma Processes & Polymers

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The synthesis and the growth of carbonaceous microparticles is observed in a capacitively coupled radio‐frequency discharge in controlled adamantane‐acetylene gas mixtures. The plasma is characterized by optical emission spectroscopy and mass spectroscopy while the produced particles were analyzed ex situ using Fourier‐Transform infrared absorption spectroscopy. It is revealed that the adamantane to acetylene ratio controlled the particle material properties, in particular the type of chemical bonds between the constituting polymers. Systematic and consistent changes in plasma parameters when changing the adamantane to acetylene ratio are also reported and are correlated to the evolution of particle material properties.

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Influence of Ar/C2H2 ratio on the structure of hydrogenated carbon films

Cited by 13 publications

References 31 publications

Modification of the amorphous carbon films by the ns-laser irradiation

Modification of the amorphous carbon films by the ns-laser irradiation

Influence of the Oxygen Plasma Treatment on Carbon Electrode and Capacity of Supercapacitors

Hydro‐carbon material design in a capacitively coupled radio‐frequency discharge

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