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

Abstract

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.

Novel Water Dispersible and Magnetically Recoverable Palladium Nano Catalyst for Room‐Temperature Suzuki‐Miyaura Coupling Reaction

“… [6a,d] XPS results of C 1s showed main peaks located at 282.5, 284.7, 286.1, 287.8 which were attributed to C−Si, C−C or C=C, C−N, and C−O or C−S bonds, respectively [13] . XPS spectra in Si 2p region showed two peaks centered at 103.8 and 104.5 related to Si‐O−C and SiO 2 , forms, respectively [14] . Peaks located at 398.5, 400 and 4.1.5 are related to N=N, N−C and +NR 3 forms of nitrogen, respectively [6d,15] .…”

“…[13] XPS spectra in Si 2p region showed two peaks centered at 103.8 and 104.5 related to Si-OÀ C and SiO 2 , forms, respectively. [14] Peaks located at 398.5, 400 and 4.1.5 are related to N=N, NÀ C and + NR 3 forms of nitrogen, respectively. [6d,15] The presence of Br in the structure was confirmed by the appearance of peaks at 65.7 and 66.9 related ChemistrySelect to 3d5/2 and 3d3/2, respectively.…”

“…In order to survey the effect of starch and Fe 3 O 4 simultaneously, three catalysts were prepared (Starch@Pd, Starch@SH@Pd and Fe 3 O 4 @IL-TZÀ Pd). Results showed that using these three catalysts, in all cases, the yields were very low (Table 1, entries, [14][15][16].…”

Surface Analysis of TMCTS-Based SiOC(H) Low-k Dielectrics in Post-Etch Strip of ACL Hardmask

“…The O1s peaks were attributed to oxygen in C–O–C and Si–O–Si bonds. The proportions of O and C atoms that were bound to Si atoms could be determined by comparing the binding energies in the Si2p spectra of SiO 2 C 2 and SiO 2 or SiO 3 C [ 20 , 21 ]. Carbon in C–H bonds accounted for more than half of the peak intensity in the de-convoluted C1s spectra.…”

Diamond-Like Carbon (DLC) Coatings: Classification, Properties, and Applications

“…Recently published work revealed DLC films that contain 4-29% of Si and were deposited by reactive magnetron sputtering of C target [145]. H-free DLC films with embedded Cu nanoparticles, such as DLC: Cu, were increased by simultaneous DC magnetron sputtering with graphite and Cu points of view [146].…”