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Visible Raman spectroscopy of carbon films synthesized by ion-plasma sputtering of graphite

Published online by Cambridge University Press:  13 January 2016

Alexander P. Ryaguzov ,
Gaziz A. Yermekov ,
Timur E. Nurmamytov ,
Renata R. Nemkayeva ,
Nazim R. Guseinov  and
Rustam K. Aliaskarov
Alexander P. Ryaguzov*
Affiliation:
National Nanotechnological Laboratory Open Type, Al-Farabi KazNU, Almaty 050012, Kazakhstan; and Department of Molecular Physics, National Research Nuclear University MEPhI, Moscow 115409, Russia
Gaziz A. Yermekov
Affiliation:
National Nanotechnological Laboratory Open Type, Al-Farabi KazNU, Almaty 050012, Kazakhstan
Timur E. Nurmamytov
Affiliation:
National Nanotechnological Laboratory Open Type, Al-Farabi KazNU, Almaty 050012, Kazakhstan
Renata R. Nemkayeva*
Affiliation:
National Nanotechnological Laboratory Open Type, Al-Farabi KazNU, Almaty 050012, Kazakhstan; and Laboratory of engineering profile, Al-Farabi KazNU, Almaty 050040, Kazakhstan
Nazim R. Guseinov
Affiliation:
National Nanotechnological Laboratory Open Type, Al-Farabi KazNU, Almaty 050012, Kazakhstan
Rustam K. Aliaskarov
Affiliation:
Laboratory of engineering profile, Al-Farabi KazNU, Almaty 050040, Kazakhstan
*
a) Address all correspondence to these authors. e-mail: ryaguzov_a@mail.ru, quasisensus@mail.ru
a) Address all correspondence to these authors. e-mail: ryaguzov_a@mail.ru, quasisensus@mail.ru
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Abstract

The article discusses the structure and properties of noncrystalline carbon films synthesized by ion-plasma sputtering of a graphite target in an argon atmosphere at direct current. Analysis of the molecular structure of carbon films was performed using Raman spectroscopy and dependence of the structure of synthesized films on the synthesis temperature and substrate material was revealed. Besides the main G peak possesses the values in a broad frequency range from 1500 to 1575 cm−1. The evolution of molecular structure peculiarities of synthesized carbon films depending on the synthesis conditions was clearly shown using the numerical methods of the Raman spectra decomposition. Studies of the optical spectra showed that the band gap of synthesized films varies from 0.78 to 1.67 eV and with increasing optical band gap, the value of G peak position decreases under laser excitation of 2.62 and 1.96 eV.

Keywords

plasma-enhanced CVD (PECVD) (deposition)Raman spectroscopymorphology
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 1: Annual Issue: Early Career Scholars in Materials Science , 14 January 2016 , pp. 127 - 136
Copyright
Copyright © Materials Research Society 2016 

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