Spatial Modulation of the Dielectric Permittivity and its Effect on the Spectral Responsivity of Heterodimensional Photodetectors
Spectral photocurrent measurements on AlGaAs/GaAs heterodimensional detectors show a peak near the absorption edge of GaAs under low incident power and at high biasing levels. Previous work has attributed similar results to the Franz-Keldysh spectral [...]