Plasmonic electrons enhanced resonance Raman scattering (EERRS) and electrons enhanced fluorescence (EEF) spectra

Abstract In this letter, we successfully manipulate plasmonic electron-enhanced resonance Raman scattering (EERRS) and electron-enhanced fluorescence (EEF) spectra by using gate and bias voltages. The intensities of Raman and fluorescence spectra can be significantly enhanced or suppressed by turning gate and/or bias voltages. It is confirmed that enhancement is contributed from plasmonic electromagnetic field and plasmonic hot electrons generated from plasmon decay, and which cannot be enhanced by adjusting the current/bias voltages. And our results demonstrate that plasmonic electrons can efficiently enhance intensities of resonance Raman and fluorescence.