Strained Layer Superlattice Using HgTe for VLWIR Detection

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$99,986.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
FA8650-04-M-5425
Agency Tracking Number:
B041-082-1024
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
EPIR TECHNOLOGIES, INC.
590 Territorial Drive, Suite B, Bolingbrook, IL, 60440
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
068568588
Principal Investigator:
Paul Boieriu
Senior Engineer
(630) 771-0206
pboieriu@epir.com
Business Contact:
Sivalingam Sivananthan
President
(630) 771-0201
siva@epir.com
Research Institution:
n/a
Abstract
High-performance detectors sensing in the long wavelength and very long wavelength infrared spectral ranges are desirable for various applications supporting Air Force and Missile Defense capabilities. Limited types of detectors and arrays are currently available for the detection of infrared radiation with wavelengths longer than 15 microns, and most are based on low quantum efficiency extrinsic semiconductors. Despite considerable progress in bulk HgCdTe photovoltaic technology, difficulties persist in sensing wavelengths longer than 10 microns with a bulk material due to limitations imposed by large tunneling dark currents and Auger recombination rates. Strained layer superlattices using HgTe layers and lattice mismatched layers based on CdTe alloys are an extremely promising alternative for infrared systems requiring higher temperature and longer wavelength operation. In this type of superlattice, the active region layers are strained, playing a crucial role in suppressing Auger recombination and therefore increasing the operating temperature of the infrared sensing devices above current standards. The presence of a novel type of detector material based on II-VI strained layer superlattice will not only pave the way to emerging research but will also have an impact on a U.S. market that requires high quality detectors sensitive to very long wavelength infrared radiation.

* information listed above is at the time of submission.

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