Effect of Chromium Interlayer Thickness on Optical Properties of Au-Ag Nanoparticle Array

Figure 5

Schematic illustration of hybrid Au-Ag nanoparticle array fabrication with the following five steps: drop-coating of monolayered PS nanospheres on substrate; deposition of a thin buffer layer of Cr film over the as-coated monolayered PS nanospheres; a further deposition of a layer of Ag film following the Cr deposition; final deposition of a caped layer of Au thin film on top of the Ag film; a 2D hybrid Au-Ag nanoparticle array formation on substrate after left-off of the monolayered PS nanospheres.