The Effect of Nonequilibrium Synthesis Conditions on the Structure and Optical Properties of Amorphous Carbon Films


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

Amorphous carbon (a-C) thin films are synthesized using a nonequilibrium method of ion-plasma sputtering of a graphite target under argon atmosphere at a constant plasma current. The local structure of carbon films is studied by the Raman spectroscopy method. Using the normal distribution in the decomposition of the Raman spectra, it is found that a peak typical for a phonon density of states with sp3 bond hybridization appears in the frequency region of 1260 cm–1 at synthesis temperatures of less than 150°C. In addition, the influence of the dimensions of nanostructures composed of sp2 sites on the width of optical bandgap and their correlation with the results of X-ray photoelectron spectroscopy (XPS) in a-C films is shown.

About the authors

A. P. Ryaguzov

National Nanotechnology Open Laboratory, Al-Farabi Kazakh National University

Author for correspondence.
Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040

R. R. Nemkayeva

National Nanotechnology Open Laboratory, Al-Farabi Kazakh National University; Engineering Laboratory, Al-Farabi Kazakh National University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040; Almaty, 050040

O. I. Yukhnovets

National Nanotechnology Open Laboratory, Al-Farabi Kazakh National University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040

N. R. Guseinov

National Nanotechnology Open Laboratory, Al-Farabi Kazakh National University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040

S. L. Mikhailova

Department of Solid State Physics and Nonlinear Physics, Al-Farabi Kazakh National University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040

F. Bekmurat

Department of Solid State Physics and Nonlinear Physics, Al-Farabi Kazakh National University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040

A. R. Assembayeva

National Nanotechnology Open Laboratory, Al-Farabi Kazakh National University; Satpaev Kazakh National Technical University

Email: ryaguzov_a@mail.ru
Kazakhstan, Almaty, 050040; Almaty, 050040

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2019 Pleiades Publishing, Ltd.