Surface-Enhanced Raman Spectroscopy on an As-deposited Fano Resonance Multilayer Substrate

In this work, we exploit the use of non-patterned multilayer thin films as substrates for surface-enhanced Raman spectroscopy (SERS) investigation. An appropriate selection materials and thickness allows obtaining Fano resonance exhibiting high peak reflection at same working wavelength SERS apparatus. The proposed system is constituted by Ti/Ag/ZnO/Ag/Ti deposited on a glass substrate sputtering technique. effect provided was investigated micro-Raman through analysis solutions lithium perchlorate in propylene carbonate salt concentrations 0.1, 0.5, 1.0, 2.0 M compared to reference (glass substrate) with an average enhancement all bands around 3. flexibility easily different wavelengths combined low cost large area fabrication technology represents main advantage