Thermal annealing of exfoliated graphene

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Abstract

Monolayer graphene is obtained by mechanical exfoliation using scotch tapes. The effects of thermal annealing on the tape residues and edges of graphene are researched. Atomic force microscope images showed that almost all the residues could be removed in N2/H2 at 400°C but only agglomerated in vacuum. Raman spectra of the annealed graphene show both the 2D peak and G peak blueshift. The full width at half maximum (FWHM) of the 2D peak becomes larger and the intensity ratio of the 2D peak to G peak decreases. The edges of graphene are completely attached to the surface of the substrate after annealing. © 2013 Wang Xueshen et al.

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Xueshen, W., Jinjin, L., Qing, Z., Yuan, Z., & Mengke, Z. (2013). Thermal annealing of exfoliated graphene. Journal of Nanomaterials, 2013. https://doi.org/10.1155/2013/101765

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