Formation of silver particles for SERS spectroscopy by mist chemical vapor deposition method

Abstract

Silver particles on the quartz glass substrate were formed using the mist chemical vapor deposition method. The deposited particles were comprised of nano to sub-micron particle that were concentrically located. The particles were polycrystalline, and the chemical state was found to be metallic silver. By measuring rhodamine6G (R6G) solution on the silver particles as an active plate for surface enhanced Raman scattering (SERS), the peaks of the SERS signal corresponding to R6G were clearly detected down to the concentration of 10−8 mol l−1. Additionally, the SERS intensities linearly decreased with the decrease in R6G concentrations.