Fig. 1.
Plasmon generated hot charge carrier transport in a nanoparticle-on-mirror geometry. a Self-assembled 80 nm nanoparticle-on-mirror geometry used to elicit field enhancements required for single-molecule spectroscopy. b FDTD-calculated electric field enhancement (E max/E 0 > 600) for structure in a at 760 nm. Inset: plasmon-induced hot carrier population for different points around the NPoM geometry (marked with coloured arrows, calculated at 633 nm). c Schematic representation which depicts the plasmon-induced hot electron transfer between Au nanoparticles and unoccupied molecular orbitals of adsorbed molecules and the consequent reduction process