Passivation of Type II Superlattices for VLWIR Sensors

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0006-06-C-7517
Agency Tracking Number: B064-011-0002
Amount: $99,927.00
Phase: Phase I
Program: STTR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: MDA06-T011
Solicitation Number: N/A
Small Business Information
1801 Maple Avenue, Evanston, IL, 60201
DUNS: 129503988
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Erick Michel
 Vice President
 (847) 491-7208
 erickjmichel@sbcglobal.net
Business Contact
 Manijeh Razeghi
Title: President
Phone: (847) 491-7208
Email: razeghi@ece.northwestern.edu
Research Institution
 NORTHWESTERN UNIV.
 Charlotte A Trink
 633 Clark St Room 2-502
Evanston, IL, 60208
 (847) 491-1967
 Nonprofit college or university
Abstract
Very long wavelength infrared (VLWIR) detectors are highly needed for midcourse phase missile defense. Blocked impurity band detectors are capable of sensing at these wavelengths but require extremely low temperatures, in the 10K or less range. The InAs/GaSb Type II heterostructure system offers unique design flexibility for new innovative detectors. By incorporating dark current reduction techniques, we can provide the basis for 77K detection in the 15-25 micrometer spectral range. Several tasks are required to address the application of Type II superlattices for VLWIR sensors: (i) Design of a suitable structure with cutoff wavelength in the VLWIR at the desired operating temperature (ii) Optimization of the epitaxial growth conditions for VLWIR superlattice material with the goal of minimizing recombination centers, and (iii) Development of processes for uniform and reproducible sidewall passivation.

* Information listed above is at the time of submission. *

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