Raman and optical characterization of multilayer turbostratic graphene grown via chemical vapor deposition

By D. Lenski, M. Fuhrer. 2010

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We synthesize large-area graphene via atmospheic-pressure (AP) chemical vapor deposition (CVD) on copper, and transfer to SiO2 wafers. In contrast to low-pressure CVD on copper, optical contrast and atomic force microscopy measurements show AP-CVD graphene contains significant multi-layer areas. Raman spectroscopy always shows a single Lorentzian 2D peak, however systematic differences are observed in the 2D peak energy, width, and intensity for single- and multi-layer regions. We conclude that graphene multi-layers grown by AP-CVD on Cu are rotationally disordered.

Subfields: Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/9aa07c348f5a3e71ec39c19d969954fb7b51fc8f