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Free‐standing graphene monolayers in carbon‐based composite obtained from SiC: Raman diagnostics
Author(s) -
Valakh Mykhailo,
Kiselov Vitaliy,
Yukhymchuk Volodymyr,
Dzhagan Volodymyr,
Efanov Andriy,
Tryus Maksym,
Belyaev Alexander,
Zahn Dietrich R. T.
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431116
Subject(s) - graphene , raman spectroscopy , materials science , sublimation (psychology) , composite number , monolayer , graphite , composite material , carbon fibers , scanning electron microscope , nanotechnology , crystallite , optics , metallurgy , psychology , psychotherapist , physics
A carbon‐based composite was obtained by an optimized method of high‐temperature sublimation of polycrystalline SiC. Scanning electron microscopy of the composite detected flakes with lateral sizes of up to tens of microns and some fine‐dispersed carbon material. From a thorough analysis of G and 2D bands in the Raman spectra measured within the flakes we conclude that the flakes consist of free‐standing graphene monolayers of high quality, while the fine‐dispersed material is mainly graphite. The proposed method of producing the graphene‐containing composite is supposed to be very promising due to its relative simplicity and high mass output.