Figure 3From: Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous siliconSEM images with EDX spectra of Au/PSi. The black and white spots in the SEM images and EDX spectrum for the sample PSi deposited with AuNPs at different current densities: (a) 1.5, (b) 2.5, (c) 3.5, and (d) 4.5 mA/cm2.Back to article page