Figure 3From: A silicon nanowire photodetector using Au plasmonic nanoantennas Absorption efficiency and electric field intensity for single Au sNP and hNP. (a) Absorption efficiency spectra of single Au sNP and hNP (20 nm) in air and on a planar Si substrate, respectively. A perfectly-matched-layer (PML) boundary condition was used for the simulation volume surface. Incident light is a plane wave propagating along the –z axis and linearly polarized along the x axis. Cross-sectional distributions of the electric-field intensity at a NP/Si interface are shown for wavelengths of (b, c) 500 nm and (d, e) 920 nm.Back to article page