Optical Properties of Amorphous Carbon Thin Films Fabricated Using a High-Energy-Impulse Magnetron-Sputtering Technique.
Lukasz SkowrońskiRafal ChodunMarek TrzcinskiKrzysztof ZdunekPublished in: Materials (Basel, Switzerland) (2023)
This paper reports the results of amorphous carbon thin films fabricated by using the gas-impulse-injection magnetron-sputtering method and differing the accelerating voltage (1.0-1.4 kV). The obtained layers were investigated using Raman spectroscopy, X-ray photoelectron spectroscopy (XRD), and spectroscopic ellipsometry (SE). The analysis of the Raman and XPS spectra point to the significant content of sp 3 hybridization in the synthesized materials (above 54-73%). The refractive index of the films is very high-above 2.45 in the infrared spectral range. The band-gap energy (determined using the inversed-logarithmic-derivative method) depends on the discharging voltage and is in the range from 1.58 eV (785 nm) to 2.45 eV (506 nm). Based on the obtained results, we have elaborated a model explaining the a-C layers' formation process.
Keyphrases
- raman spectroscopy
- room temperature
- dual energy
- high resolution
- photodynamic therapy
- single molecule
- solid state
- molecular docking
- computed tomography
- optical coherence tomography
- atomic force microscopy
- density functional theory
- magnetic resonance imaging
- adverse drug
- magnetic resonance
- emergency department
- label free
- nucleic acid
- molecular dynamics simulations
- molecular dynamics