Journal
NANOSCALE RESEARCH LETTERS
Volume 10, Issue -, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-015-0946-8
Keywords
Pyrolytic carbon films; Graphite; Graphene layers; Optical properties
Funding
- Federal Focus program of Ministry of Education and Science of Russian Federation [14. AAA.21.0010, RFMEFIAAA14X0010]
- FP7-PEOPLE-IRSES FAEMCAR [FP7-318617]
- H2020-MSCA-RISE-2014 COEXAN [SEP-210156718]
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We report a comparative study of optical properties of 5-20 nm thick pyrolytic carbon (PyC) films, graphite, and graphene. The complex dielectric permittivity of PyC is obtained by measuring polarization-sensitive reflectance and transmittance spectra of the PyC films deposited on silica substrate. The Lorentz-Drude model describes well the general features of the optical properties of PyC from 360 to 1100 nm. By comparing the obtained results with literature data for graphene and highly ordered pyrolytic graphite, we found that in the visible spectral range, the effective dielectric permittivity of the ultrathin PyC films are comparable with those of graphite and graphene.
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