Making graphene visible | RDL Research Database

Abstract

Microfabrication of graphene devices used in many experimental studies currently relies on the fact that graphene crystallites can be visualized using optical microscopy if prepared on top of Si wafers with a certain thickness of SiO2. The authors study graphene’s visibility and show that it depends strongly on both thickness of SiO2 and light wavelength. They have found that by using monochromatic illumination, graphene can be isolated for any SiO2 thickness, albeit 300nm (the current standard) and, especially, ≈100nm are most suitable for its visual detection. By using a Fresnel-law-based model, they quantitatively describe the experimental data.

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Publication Info

Year: 2007
Type: article
Volume: 91
Issue: 6
Citations: 1725
Access: Closed

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APA Style

                            
                                
                                    Blake P, 
                                
                                    E. W. Hill, 
                                
                                    A. H. Castro Neto
                                
                                et al.
                            
                            (2007). 
                            Making graphene visible. 
                            Applied Physics Letters
                            , 91
                            (6)
                            .
                            https://doi.org/10.1063/1.2768624
                        

Identifiers

DOI: 10.1063/1.2768624