Sulfur passivation for photosensitivity control of detectors with corrugated metal III-V semiconductors interface

We report on sulfur bared surface passivation method for photosensitivity control of MSM detectors with corrugated interface. Spectral and polarization characteristics of photosensitivity me used to study this treatment effectiveness. The investigation results reveal that the photosensitivity of diodes increases up to a one order of magnitude. Such characteristics were monitored over a period of 3 years and were found to be stable. The spectral sensitivity of prepared photodetectors in surface plasmon polaritons excitation regime after S-treatment is tunable over the visible spectrum by a dielectric coating.