Raman Scattering Spectra of Carbon Materials Used as Cathodes of Auto-Emission Radiation Sources
Authors
Kirill Nikolaevich Belov
South Ural State University, Chelyabinsk
Alexey Sergeevich Berdnikov
South Ural State University, Chelyabinsk
Viktor Borisovich Kireev
Moscow Institute of Physics and Technology, Moscow
Nataliya Dmitrievna Kundikova
South Ural State University, Chelyabinsk; Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg
Danila Nikolaevich Prosekov
South Ural State University, Chelyabinsk
Duc Man Fung
Moscow Institute of Physics and Technology, Moscow
Evgeny Pavlovich Sheshin
Moscow Institute of Physics and Technology, Moscow
Structured carbon materials are widely used in engineering and scientific research, in particular as materials for the auto-emission cathode of cathodoluminescent lamps. We apply Raman spectroscopy to determine the effect on fine-grained graphite (MPG-6), pyrolytic graphite, and PAN fibers when used as cathodes. Raman scattering spectra of all three materials were recorded before and after in the spectral range from 1000 to 2000 cm–1. In addition to the main lines of G, D, and D’ of carbon materials, we found a line in the range of (1450–1460) cm–1 in the initial pyrolytic graphite, in pyrolytic graphite after use as a cathode, and in the MPG-6 sample after use as a cathode. We observed the greatest change in the relative integral intensity of line D in pyrolytic graphite and MPG-6. This intensity increased in pyrolytic graphite and decreased in MPG-6 after use as a cathode. It will be possible to use the relative integral intensity of line D to evaluate the operation of a cathodoluminescent lamp.
Author Biographies
Kirill Nikolaevich Belov, South Ural State University, Chelyabinsk
Assistant Professor, Optoinformatics Department
Alexey Sergeevich Berdnikov, South Ural State University, Chelyabinsk
student
Viktor Borisovich Kireev, Moscow Institute of Physics and Technology, Moscow
Cand. Sc. (Physical and Mathematics), Associate Professor
Nataliya Dmitrievna Kundikova, South Ural State University, Chelyabinsk; Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg
Dr. Sc. (Physical and Mathematics), Professor, Optoinformatics Department
Danila Nikolaevich Prosekov, South Ural State University, Chelyabinsk
student
Duc Man Fung, Moscow Institute of Physics and Technology, Moscow
PhD student
Evgeny Pavlovich Sheshin, Moscow Institute of Physics and Technology, Moscow
