Au:oxide composite multilayer films with Au nanoparticles sandwiched by oxide layers (such as SiO<sub>2</sub>, ZnO, and TiO<sub>2</sub>) were prepared in a magnetron sputtering system. Their photoluminescence (PL) spectra were investigated by employing a micro-Raman system in which an Argon laser with a wavelength of 514 nm was used as the pumping light. Distinct PL peaks located at a wavelength range between 590 and 680 nm were observed in most of our samples, with Au particle size varying from several to hundreds of nanometers. It was found that the surface plasmon resonance (SPR) in these composites exerted a strong influence on the position of the PL peaks but had little effect on the PL intensity.
© 2006 Optical Society of America
Original Manuscript: May 23, 2006
Revised Manuscript: August 7, 2006
Manuscript Accepted: September 1, 2006
Hongbo Liao, Weijia Wen, and George K. Wong, "Photoluminescence from Au nanoparticles embedded in Au:oxide composite films," J. Opt. Soc. Am. B 23, 2518-2521 (2006)