Uncooled High-Performance InAsSb Focal Plane Arrays

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,688.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CE77P
Award Id:
n/a
Agency Tracking Number:
105749
Solicitation Year:
2010
Solicitation Topic Code:
S1.04
Solicitation Number:
n/a
Small Business Information
7620 Executive Drive, Eden Prairie, MN, 55344-3677
Hubzone Owned:
N
Minority Owned:
Y
Woman Owned:
N
Duns:
876868647
Principal Investigator:
Yiqiao Chen
Principal Investigator
(952) 934-2100
chen@svta.com
Business Contact:
Leslie Price
Contract Manager
(952) 934-2100
price@svta.com
Research Institute:
Stub




Abstract
SVT Associates proposes an innovative digital alloy technique to extend the cutoff wavelength of InAsSb beyond 5 um, a wider band gap InAlAsSb layer inserted into depletion region to suppress dark current, and atomic layer deposition technique to coat radiation-hard material AlN on InAsSb detectors grown on GaSb substrate. This digital alloy InAsSb material system is capable of infrared detection between 0.4-5 um, depending on layer thickness of the period of each digital ultra thin superlattice. The goal of this program is to develop InAsSb-based FPA for 0.4-5 um detection at room temperature. Photo detector arrays using this material are of great interest to the NASA for various applications including, in particular, imaging and optical detection, and object discrimination when tracking targets in space or performing astronomical observations. These MWIR photo detectors can also find application to infrared-based chemical identification systems and terrestrial mapping. Applying the dark current suppression and cutoff wavelength extension process to the InAsSb-based detectors should result in higher operating temperature, extended cutoff wavelength, and radiation-hard devices, all important factors that should significantly enhance FPA operation. We intend to characterize the positive effects of proposed techniques in Phase I. In Phase II we will refine the techniques to realize high-performance MWIR FPAs operating at ambient temperatures.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government