Modeling and Theoretical Analysis of the SERS Enhancement Factor Considering the Electronic Structural Energy

The enhancement factor is one of the key parameters characterizing phenomenon surface-enhanced Raman scattering. At present, this parameter described by an empirical formula or a certain single physical mechanism instead unified model chemical and electromagnetic mechanisms. It necessary to integrate dual mechanisms SERS more accurately obtain with molecular selectivity. Therefore, we propose quantitative for prediction that includes two main contributions, metal plasmon resonance electronic structure. Theoretical analysis verification experimental results prove new predictive (EF) structural energy improves approximately 10 times can be used calculate factors different molecules on same substrate material, which provide selectivity accurate EF predictions. This paper presents theoretical adsorption adsorbed surface substrate, combines scattering, provides deep comprehension