Two color, Bias Selectable, HgCdTe Airborne Multispectrum Sensor Arrays

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,304.00
Award Year:
1994
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
26537
Agency Tracking Number:
26537
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
One Patriots Park, Bedford, MA, 01730
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Nasser H. Karam, Ph.d.
(617) 275-6000
Business Contact:
() -
Research Institution:
n/a
Abstract
Spire proposes to design a multispectral infrared camera basaed on a two-color bias-selectable focal plane array fabricated in HgCdTe prepared by MOCVD. The proposed detector is a two terminal, HgCdTe, n-p-n heterostructure which can be thought of as two back-to-back diodes. Through proper selection of the materials composition and application of an appropriate bias, the device can be made sensitive to either 3-5 or 8-12 micron radiation. With good junction characteristics, background limited performance (BLIP) should be achievable in both bands. In addition, the device only requires two terminals such that a mosaic of detectors could be hybridized with a silicon signal processor using existing bump technology. In Phase I, Spire and its subcontractor Santa Barbara Focal Plane will design a two-color IR focal plane array camera and experimentally demonstrate the proposed two-color HgCdTe IR detector in MOCVD materials. Spire has successfully fabricated MOCVD two-color devices with cut-off wavelengths at 4.8 and 9.0 microns on bulk CdZnTe. In Phase II, we will apply an opimized device structure to MOCVD grown HgCdTe/CdZnTe/GaAs/Si and build a prototype 256 x 256 two-color focal plane array. The array will be integrated with an IR camera and deomonstrated in a portable brass-board system.

* information listed above is at the time of submission.

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