Two color, Bias Selectable, HgCdTe Airborne Multispectrum Sensor Arrays

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 26537
Amount: $69,304.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
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
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Nasser H. Karam, Ph.d.
 (617) 275-6000
Business Contact
Phone: () -
Research Institution
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. *

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
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government