Multiwavelength Raman analysis of SiOx and N containing amorphous diamond like carbon films

Tamulevičienė, Asta; Kopustinskas, V.; Niaura, Gediminas; Meškinis, Šarūnas; Tamulevičius, Sigitas

doi:10.1016/j.tsf.2014.11.042

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…In addition, in some cases in Raman scattering spectra of DLC:Si and DLC:SiO x films other transpolyacetylene-related peaks were observed [8,35,36]. Besides, the study of DLC:SiO x films by multiwavelength Raman scattering spectroscopy revealed the dependence of the spectra on excitation wavelength [39]. Transpolyacetylene-related spectral features can be seen in the case of the Raman scattering spectra excited by 633 and 785 nm wavelength light, while no transpolyacetylene related separate peaks or shoulders of the peaks were found in spectra excited by 532 nm wavelength light.…”

Section: Structurementioning

confidence: 91%

Diamond Like Carbon Films Containing Si: Structure and Nonlinear Optical Properties

et al. 2020

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In the present research diamond-like carbon (DLC) films containing 4–29 at.% of silicon were deposited by reactive magnetron sputtering of carbon target. Study by X-ray photoelectron spectroscopy revealed the presence of Si–C bonds in the films. Nevertheless, a significant amount of Si–O–C and Si–Ox bonds was present too. The shape of the Raman scattering spectra of all studied diamond-like carbon containing silicon (DLC:Si) films was typical for diamond-like carbon. However, some peculiarities related to silicon doping were found. Studies on the dependence of DLC:Si of the optical transmittance spectra on the Si atomic concentration have shown that doping by silicon affects linear, as well as nonlinear, optical properties of the films. It is shown that the normalized reflectance of DLC:Si films decreased with the increased exciting light fluence. No clear relation between the normalized reflectance and photoexcited charge carrier relaxation time was found. It was suggested that that the normalized reflectance decrease with fluence can be related to nonlinear optical properties of the hydrogenated diamond-like carbon phase in DLC:Si film.

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Section: Structurementioning

confidence: 91%

Diamond Like Carbon Films Containing Si: Structure and Nonlinear Optical Properties

et al. 2020

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“…Moreover, the presence of 2D peak is the evidence of bi-layer graphene structure and good indication of c axis ordering. Raman spectra with characteristic G and D bands are implications of defects, disorder, and carbon grain size; their intensity ratio (I(D)/I(G)) is related to the level of disorder degree and average size of sp 2 domains [12,19]. In this case, the graphene crystallite size can be calculated using Eq.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Investigation of carbon phase evolutions in titanium nitride-carbon nanocomposites prepared in supercritical benzene with respect to their lithium storage capacity

et al. 2017

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Abstract. Titanium nitride-carbon nanocomposites have been synthesized by the reaction of TiCl 4 and NaN 3 in supercritical benzene medium that also serves as a carbon source. The as-prepared precursor has been subjected to di erent heat treatments under ammonia and nitrogen atmospheres. The structure and chemical composition of the synthesized TiN-C nanocomposites are studied by X-Ray Di raction (XRD) and CHN elemental analysis. Meanwhile, the nature of carbonaceous species and the respective carbon phase transitions during supercritical process and following heat treatments are further investigated by Raman spectroscopy, Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS), and their charge-discharge characteristics with respect to lithium storage. After 10 h of NH3 treatment at 1000 C, carbonaceous phase transforms to graphene layered structure. The highly e cient mixed TiN conducting network and the internal defects between G layers induced by nitrogen doping improve rate capability and cycling performance of G sheets and provide a speci c capacity of 381 mAh g 1 at Charge/Discharge (C/D) rate of 0.2 C. The enhanced electrochemical performance of the SIV nanocomposite is mainly due to improving the electronic/ionic conductivity, reducing charge transfer coe cient, and increasing electrochemical surface area that are resulted from anchoring of TiN nanoparticles to graphene sheets.

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“…Thin films of a-C:H:Si:N [1][2][3][4][5][6][7][8] , a-C:H:Si:O [9][10][11][12][13][14][15][16][17][18][19][20] , and a-C:H:Si:O:N [21][22][23][24] , where a designates amorphous, have been produced by plasma deposition from diverse monomers and comonomers. For example, a-C:H:Si:N has been produced, among others, in plasmas fed hexamethyldisilazane and nitrogen [1] , diethylsilane and ammonia [3] , and methane, silane and nitrogen [5] .…”

Section: Introductionmentioning

confidence: 99%

“…For example, a-C:H:Si:N has been produced, among others, in plasmas fed hexamethyldisilazane and nitrogen [1] , diethylsilane and ammonia [3] , and methane, silane and nitrogen [5] . Similarly, a-C:H:Si:O has been produced from plasmas of hexamethyldisiloxane (HMDSO) [9] , trimethylmethoxysilane and argon [10] , and HMDSO and argon [12] . Films of a-C:H:Si:O:N have been deposited from plasmas fed HMDSO, acetylene and nitrogen [22] , and from tetramethlydisilazane, oxygen and nitrogen [23] .…”

Section: Introductionmentioning

confidence: 99%

Structural and optical properties o plasma-deposited a-C:H:Si:O:N films

et al. 2021

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Thin a-C:H:Si:O:N films were deposited from plasmas fed hexamethyldisiloxane, oxygen and nitrogen, and characterized as a function of the partial pressure of oxygen in the feed, R ox . Deposition rates varied from 10 to 27 nm min -1 . Surface roughness was independent of R ox , being around 10 nm. The films contain C=C and C=O, and also Si-C and Si-O-Si groups. Lower [C] and [N] but greater [O] and [Si] were measured in the films as R ox was increased. Refractive indices of ~ 1.5 and optical energy gaps which fell from ~ 3.3 to ~2.3 eV were observed with increasing R ox . The Urbach energy fell with increasing optical gap, which is characteristic of amorphous materials. Such materials have potential as transparent barrier coatings.

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Multiwavelength Raman analysis of SiOx and N containing amorphous diamond like carbon films

Cited by 10 publications

References 42 publications

Diamond Like Carbon Films Containing Si: Structure and Nonlinear Optical Properties

Diamond Like Carbon Films Containing Si: Structure and Nonlinear Optical Properties

Investigation of carbon phase evolutions in titanium nitride-carbon nanocomposites prepared in supercritical benzene with respect to their lithium storage capacity

Structural and optical properties o plasma-deposited a-C:H:Si:O:N films

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