USA flag logo/image

An Official Website of the United States Government

Two color, Bias Selectable, HgCdTe Airborne Multispectrum Sensor Arrays

Award Information

Department of Defense
Award ID:
Program Year/Program:
1994 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Spire Corporation
One Patriots Park Bedford, MA 01730-2396
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1994
Title: Two color, Bias Selectable, HgCdTe Airborne Multispectrum Sensor Arrays
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $69,304.00


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.

Principal Investigator:

Nasser H. Karam, Ph.d.

Business Contact:

Small Business Information at Submission:

Spire Corp.
One Patriots Park Bedford, MA 01730

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No