CASPIAN JOURNAL
MANAGEMENT AND HIGH TECHNOLOGIES
SYNTHESIS OF MULTIGRAPHENE ON POLYCRYSTALLINE FILMS OF NICKEL BY CVD METHOD
 |
Read | Bulatova Alsu N. SYNTHESIS OF MULTIGRAPHENE ON POLYCRYSTALLINE FILMS OF NICKEL BY CVD METHOD // Caspian journal : management and high technologies. — 2011. — №4. — pp. 97-103. |
Bulatova Alsu N. - Cand. in Physics and Mathematics, Astrakhan State University, 20a Tatishchev str., Astrakhan, 414056, Russia, anbulatova@mail.ru.
Actuality of application of graphene in an unusually wide range of different technological application is caused by its extraordinary physical properties. In recent time research on developing new methods for obtaining graphene in macroscopic quantities are being led actively. In future electronic devices will be made on the basis of the graphene layers grown on different substrates. Studies of the effect of substrate on the properties of graphene gives new possibilities in a meaningful influence on the characteristics of this unique material. During the study, CVD was employed to obtain multigraphene films and their optical properties in the UV and visible range were investigated. According to optical microscopy and Auger spectroscopy multigraphene films were obtained and they covered the surface of the substrate and had a thickness of 7–8 layers, with the exception of some flocculent areas (as small as 30 microns) in thickness of 3–4 layers. It was found out that the change in the number of layers multigraphene does not affect the profile of the spectrum in the UV-visible range. The highest throughput in this range had a flaky area. In all the spectra the absorption peak of ? = 250 nm was found that corresponds to ?-? * transitions of aromatic bonds C-C [5]. The increase of absorption in the visible spectrum is obvious due to the influence of Ni substrate and defects of multigraphene structure.
Key words: multigraphene,CVD method,nickel,optical microscopy,Auger spectrometry,the number of layers,X-ray diffractometry,UV-visible spectrum