Semiconductor Physics, Quantum Electronics & Optoelectronics. 2015. V. 18, N 1. P. 106-109.


Morphology and optical constants of nanographite films created by thermal vacuum deposition
V.V. Kozachenko1, O.S. Kondratenko2, F.Le Normand3

1Kyiv Taras Shevchenko National University, Department of Physics 64, Volodymyrska str., 01601 Kyiv, Ukraine
2V. Lashkaryov Institute of Semiconductors Physics, NAS of Ukraine, 45, prospect Nauky, 03028 Kyiv, Ukraine
3Institut d'Electronique du Solide et des Systèmes (InESS), 23 rue du Loess, 67037 Strasbourg Cedex 2, France

Abstract. The method for nanographite films preparation using thermal sublimation in vacuum of graphite nanoparticles under ultrasound treatment was proposed. Studied in the system nanographite film − substrate were composition and morphology of a multi-layer interface system by using ellipsometry and Raman scattering. It has been ascertained that the optical parameters of discontinuous nanographite films strongly depend on morphology of the surface layer. Using the results of ellipsometric measurements, we determined the effective optical constants, thickness of the films and calculated the volume composition of the solid phase in the film within the framework of the model of effective environment by Bruggeman.

Keywords: nanographite films, ultrasound, optical constants, ellipsometry, Raman.

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