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Surface Leakage Suppression via Gaiting in LWIR Single- and Multi-Color Type-II Superlattice Photodetectors

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-13-C-7622
Agency Tracking Number: B2-1925
Amount: $997,853.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: MDA11-019
Solicitation Number: 2011.2
Timeline
Solicitation Year: 2011
Award Year: 2013
Award Start Date (Proposal Award Date): 2013-05-14
Award End Date (Contract End Date): 2015-05-16
Small Business Information
1801 Maple Avenue
Evanston, IL -
United States
DUNS: 129503988
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 Ryan McClintock
 Technical Director
 (847) 491-7208
 rmcclin@gmail.com
Business Contact
 Manijeh Razeghi
Title: President
Phone: (847) 491-7251
Email: mpt1pnc6@yahoo.com
Research Institution
 Stub
Abstract

High performance infrared detectors in the LWIR regime are highly needed in a number of missile defense missions. In order to image targets from long distance, it is important that imagers have high sensitivity and high resolution. This leads to technical goals of having low noise, low dark current in small size pixels in large arrays. While saturated performance levels of traditional systems based on bulk semiconductors have not quite met the requirement of applications, it is expected that novel quantum systems will bring new development stage for infrared imagers. In recent years, Type-II InAs/GaSb superlattice (T2SL) has experienced significant development, from theoretical modeling, material growth to device processing and packaging. Performance of LWIR detector based on T2SL has become comparable, even better than that of HgCdTe. However, LWIR T2SL devices have been shown to be limited by surface leakage, especially at lower operating temperature. This proposed effort will address surface processes in order to suppress this bottle neck of T2SL technology. By using a novel gated photodiode design and correlating the influence of structural design and material quality on surface leakage a high performance LWIR FPA with dark current below 1 & #61549;A/cm2 at 67K will be demonstrated.

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

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