Figure 6

XPS spectra using a single sample without a pattern. (a) Illustration of the prepared sample and XPS spectra showing the composition (at%) of the sample. (b) Normalized XPS spectrum of the Au binding energy in the vicinity of interface (3) in the green area in (a). (c) Deconvoluted XPS spectra for the Au binding energy at interface (3). (d) Deconvoluted XPS spectra for Au binding energy near interface (2).