Structural properties of graphene on copper substrates

  • Egor A. Kolesov Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus http://orcid.org/0000-0001-8917-8937
  • Artem D. Pashinskiy Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Mikhail S. Tivanov Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus http://orcid.org/0000-0002-4243-0813
  • Olga V. Korolik Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Olesya O. Kapitanova Lomonosov Moscow State University, 1 Leninskie Gory Street, building 3, Moscow 119234, Russia http://orcid.org/0000-0002-7384-3426
  • Gennady N. Panin Institute for Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya Street, Chernogolovka 142432, Moscow region, Russia, Nano-Information Technology Academy, Dongguk University, 3-26 Pildong, Junggu, Seoul 100-715, South Korea
DOI: https://doi.org/10.33581/2520-2243-2019-2-58-65

Abstract

Introduction. Studies of the substrate influence on graphene properties are relevant due to the high sensitivity of this two-dimensional material to the smallest effects. At the same time, studies dedicated to the separation of direct substrate influence and residual synthesis effects on graphene properties are not described in the literature in sufficient detail.
Materials and methods. This paper presents the results of a study of the structural properties of as-grown and transferred graphene on copper substrates by Raman spectroscopy and atomic force microscopy.
Results and discussion. Using Raman spectroscopy, we found that the mechanical strain in the as-grown grapheme is increased, while negligibly small in transferred graphene, the strain coefficients being of 0.22– 0.33 and ∼ 0 %, respectively. Using atomic force microscopy, we showed that this effect does not relate to the copper surface irregularities: the average roughness of the substrate surface for as-grown graphene was of 20.4 nm, while for the transferred graphene it was of 62.0 nm, the height difference being of almost an order of magnitude greater for the latter. This contradiction was explained in terms of residual synthesis effects present in case of as-grown graphene.
Conclusion. Taking into account the analyzed substrate effects is important both for the refinement of methods for the initial characterization of as-grown graphene, and for practical applications requiring graphene transfer to corrugated and perforated substrates, membranes and objects of complex shape.

Author Biographies

Egor A. Kolesov, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

postgraduate student at the department of ener gy physics, faculty of physics

Artem D. Pashinskiy, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

masterʼs degree student at the department of philosophy and methodology of science, faculty of philosophy and social science

Mikhail S. Tivanov, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; head of the department of energy physics, faculty of physics

Olga V. Korolik, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics); head of the research laboratory of energy efficient materials and technologies, department of energy physics, faculty of physics

Olesya O. Kapitanova, Lomonosov Moscow State University, 1 Leninskie Gory Street, building 3, Moscow 119234, Russia

PhD (chemistry); junior researcher at the department of inorganic chemistry, faculty of chemistry

Gennady N. Panin, Institute for Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya Street, Chernogolovka 142432, Moscow region, Russia, Nano-Information Technology Academy, Dongguk University, 3-26 Pildong, Junggu, Seoul 100-715, South Korea

PhD (physics and mathematics); senior researcher at the laboratory of local diagnosis for semiconductor materials, Institute for Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, and professor at the faculty of physics, Nano-Information Technology Academy, Dongguk University

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Published
2019-05-20
Keywords: graphene, mechanical strain, Raman spectroscopy, AFM, substrate
Supporting Agencies This work was supported by Belarusian State Program for Research «Photonics, opto- and microelectronics» and Russian Foundation of Basic Researches grant No. 16-33-60229.
How to Cite
Kolesov, E. A., Pashinskiy, A. D., Tivanov, M. S., Korolik, O. V., Kapitanova, O. O., & Panin, G. N. (2019). Structural properties of graphene on copper substrates. Journal of the Belarusian State University. Physics, 2, 58-65. https://doi.org/10.33581/2520-2243-2019-2-58-65
Issue
No 2 (2019): Journal of the Belarusian State University. Physics
Section
Condensed State Physics

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