High Performance Dual Band Photodetector Arrays for MWIR/LWIR Imaging

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNL08AA13C
Agency Tracking Number: 067317
Amount: $599,371.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2006
Solicitation Topic Code: S6.01
Solicitation Number: N/A
Small Business Information
SVT Associates
7620 Executive Drive, Eden Prairie, MN, 55344-3677
DUNS: 876868647
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Yiqiao Chen
 Principal Investigator
 (952) 934-2100
 chen@svta.com
Business Contact
 Leslie Price
Title: Contract Administrator
Phone: (952) 934-2100
Email: price@svta.com
Research Institution
N/A
Abstract
This proposed Phase II program seeks to create dual-band pixel-collocated MWIR/LWIR photodetector arrays based on III-V semiconductor materials in a Type-II superlattice structure. The Type-II superlattice offers a customizable cutoff wavelength while maintaining a lattice-matched condition to the host substrate. This superlattice also has lower Auger-recombination, which reduces dark current noise, than HgCdTe solutions, and is sensitive to normal incidence radiation, in contrast to QWIP approaches. The Phase I efforts successfully designed, fabricated and characterized a Type-II dual band IR photodetector. The superlattice material growth will be further optimized in the Phase II, along with modifying the fabrication steps required to realize dual-band photodetector arrays.

* information listed above is at the time of submission.

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