Figure 5From: Optical absorption and photoluminescence studies of gold nanoparticles deposited on porous siliconThe PL spectra of Au/PSi. PL spectra for deposited AuNPs on PSi for 30 min using different current densities, (a) 1.5, (b) 2.5, and (d) 4.5 mA/cm2, and PSi as the reference.Back to article page