ABSTRACT
In this study, we present a one-step method for fabrication of silver nanoparticles decorated on the structured silicon surface by using circularly polarized fs laser irradiation in silver nitrate solution (AgNO3) and demonstrate its ability for SERS for the first time. The silver nanoparticles are uniformly formed on the nanostructured silicon surface with a mean diameter of 66 nm, which is suitable for exciting localized surface plasmon at the visible light range for related applications. When compared to the multi-step approaches, the one-step approach we proposed to obtain the silver nanoparticle-covered SERS-active substrates is much more simple and efficient.
