Photovoltaic Hg/sub 1-x/Cd/sub x/Te detectors for 12 mu m application

Hg/sub 1-x/Cd/sub x/Te (MCT) is the most important material for infrared quantum detectors in the wavelength range of 8-12 mu m. The authors have manufactured bilinear arrays of photovoltaic detectors for the 12 mu m wavelength region using a planar diffusion technology on MCT epilayers grown on CdZnTe substrates. The diodes show large R/sub shunt/ and R/sub 0/A values, nearly zero low-frequency noise even below 10 Hz, and very homogeneous photocurrent and detectivity over the array, both at 77 and 65 K. The temperature dependence of D* and R/sub 0/A corresponds to the theoretically expected behaviour.<
>