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Russian Journal of Physical Chemistry A

, Volume 92, Issue 5, pp 955–964 | Cite as

Limiting Size of Monolayer Graphene Flakes Grown on Silicon Carbide or via Chemical Vapor Deposition on Different Substrates

  • N. I. Alekseev
Physical Chemistry of Nanoclusters and Nanomaterials

Abstract

The maximum size of homogeneous monolayer graphene flakes that form during the high-temperature evaporation of silicon from a surface of SiC or during graphene synthesis via chemical vapor deposition is estimated, based on the theoretical calculations developed in this work. Conditions conducive to the fragmentation of a monolayer graphene sheet to form discrete fragments or terrace-type structures in which excess energy due to dangling bonds at the edges is compensated for by the lack of internal stress are indentified and described. The results from calculations for the sizes of graphene structures are compared with experimental findings for the most successful graphene syntheses reported in the literature.

Keywords

graphene epitaxial growth chemical vapor deposition (CVD) quantum chemistry graphene synthesis on silicon carbide 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.St. Petersburg Electrotechnical University (LETI)St. PetersburgRussia

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