7-μm-cutoff PtSi infrared detector for high sensitivity MWIR applications

PtSi Schottky infrared detectors with extended cutoff wavelengths of 5.7, 6.6, and 7.3 μm have been demonstrated by incorporating a thin p+ layer at the PtSi-Si interface for high sensitivity medium wavelength infrared imaging applications. The response uniformity of the 7-μm cutoff detector was studied.