Material Characterisation for Infrared Hybrid Arrays

Abstract

Hybrid focal plane arrays using PV HgCdTe have been developed in 128×128 and 256×256 formats mated through indium interconnects to Si CMOS readouts. The band of response for these arrays range from 0.8 – 2.5 micróns with pixel sizes of 40microns × 40 microns for the 256×256 and 60×60 for the 128×128 arrays. Mean dark currents lower than 5e^- /s at 77K and 0.2^- /s at 60K have been measured. Detector noise is typically of the order of 2 E -16 A/Hz at 1Hz under bias of -500V. The arrays exhibit quantum efficiencies of 50%.

prepared from lecture notes supplied by the author.