Optical Properties of Pyrolytic Carbon Films Versus Graphite and Graphene

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....

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Detalles Bibliográficos
Autores principales: Dovbeshko, Galyna I, Romanyuk, Volodymyr R, Pidgirnyi, Denys V, Cherepanov, Vsevolod V, Andreev, Eugene O, Levin, Vadim M, Kuzhir, Polina P, Kaplas, Tommi, Svirko, Yuri P
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2015
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4456585/
https://www.ncbi.nlm.nih.gov/pubmed/26055479
http://dx.doi.org/10.1186/s11671-015-0946-8
Descripción
Sumario: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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