Characterization of (nanostructures silver-silicon nano porous)‎ active substrates for surface enhanced Raman scattering (SERS)‎ as a function to porous silicon parameters

Abstract EN

Electrochemical etching processes at different current densities were used to prepare nano porous silicon with different porosities.

A series of nanostructures silver / nano porous silicon (NAg / NPSi) active substrate was prepared by an immersion-plating method.

Through controlling the current density, the surface-enhanced Raman scattering (SERS)behaviors to crptocyanen (CY) dye were contrastively studied, for a concentration of (10−5 M),The (SERS) behavior was attributed to the size of the deposited silver nanoparticles on porous layer.

The sensitivity of SERS signal increases with increasing the porosity of the porous sample