Figure 5
From: Photonic-plasmonic mode coupling in nanopillar Ge-on-Si PIN photodiodes
Measured spectral responsivity (○) of NP-PD devices with varying diameter dNP. For each measurement a peak analysis with three Gaussian functions (–) was carried out. The peak positions and corresponding errors are indicated in Fig. 3a. The baseline (‐ ‐ ‐) incorporates a reference responsivity spectrum obtained from a bulk photodetector with an identical semiconductor layer stack (see Fig. S7) and was adjusted for each measurement to take into account process variations. The peak at λ = 1180 nm is an artifact originating from the light source (wavelength of the pumping laser).
