Journal
ACTA PHYSICA POLONICA A
Volume 116, Issue 5, Pages 835-837Publisher
POLISH ACAD SCIENCES INST PHYSICS
DOI: 10.12693/APhysPolA.116.835
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Optical absorption and Raman scattering studies of few-layer epitaxial graphene obtained by high temperature annealing of carbon terminated face of 4H-SiC(000-1) on-axis substrates are presented Changing the pressure and annealing time different stages of the graphene formation were achieved. Optical absorption measurements enabled us to establish average number of graphene layers covering the SiC substrate. Raman scattering, experiments showed that integrated intensity of the characteristic 2D peak positively correlated with the number of graphene layers deposited on the SiC substrate. The spectral width of the 2D peak was found to decrease with the number of the deposited graphene layers
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