Figure 2
From: A novel graphene barrier against moisture by multiple stacking large-grain graphene
Raman spectra of graphene-coated Cu and bare Cu surfaces after 100 h of THS testing. Spectrum of SLG (shiny area) shows small D peak without Cu oxide peaks. Dark area of SLG and bare Cu spectra show different peak intensities of Cu2O and CuO depending on the density of Cu oxide present.
