In-situ investigation of the formation of silver nanoparticles in polyvinyl alcohol through micro-Raman spectroscopy

A novel investigation of in-situ formation of silver nanoparticles in thin films was carried out through light scattering phenomena. The Raman scattering signal of polyvinyl alcohol which acts as a stabilizing agent for the silver nanoparticles, was found to get enhanced with the formation of the silver nanoparticles. In-situ studies were carried out to record the Raman scattering to monitor the growth of the silver nanoparticles. The formation of the silver nanoparticles was confirmed by monitoring the surface plasmon absorption peak and the micrographs of field emission scanning electron microscope.