MIOMD-XI Speakers    
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1.  Dr. Eliezer Weiss, SCD Semiconductor Devices, ISRAEL
Late-Breaking Results: InAsSb-Based Bariodes Grown on GaAs Covering the Whole MWIR Atmospheric Window
Speaker Biography: Eliezer (Eli) Weiss received his B.Sc. (1975) and D.Sc. (1984) in physical chemistry from the Technion, Israel Institute of Technology. From 1984 he is with SCD. In 1989 - 1990 Eli was a research-associate in Stanford University. From 1991 to 2001 he was the manager of SCD's Crystal Growth deportment, responsible for the development and production of HgCdTe crystal and epi-layers as well as the growth of III-V epi-wafers. Since 2001 he has been the Vice President for Technologies R&D in SCD. Eli has published 1 patent and more than 40 refereed and conference papers.

Summary: XBnn mid-wave infrared (MWIR) detector arrays are aimed at high operating temperature (HOT) applications and are based on device elements with an InAsSb/AlSbAs heterostructure. Also known as barrier detectors or "bariodes", there is no depletion layer in the narrow-bandgap active layer of such devices. The usual Generation-Recombination (G-R) and Trap Assisted Tunneling (TAT) mechanisms for dark current in standard narrow bandgap diodes are totally suppressed in bariodes, leading to much lower dark currents in bariode detectors with the same bandgap wavelength. InAsSb bariode detectors, grown by molecular beam epitaxy (MBE) on lattice matched GaSb substrates and operating at 150 K have been shown previously to exhibit low dark current densities of ~10-7 A/cm2. The ability to operate a bariode IR detector at a higher temperature than a standard photodiode results in an improved range of solutions for various applications, especially where the size, weight, and power (SWaP) are critical. By raising the FPA operating temperature from 80 K to 150 K the required cooling power is reduced by about 60%, yielding advantages such as: faster cool-down time and mission readiness, lower cooling power, higher cooler reliability, and more compact detectors for volume-critical applications.
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