New Sensing Capabilities: GaN Based Dualband UV-IR Detectors

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,986.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
FA9453-05-M-0106
Award Id:
72794
Agency Tracking Number:
F051-029-0879
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
236 Saint Martins Dr SE, Mableton, GA, 30126
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
118500516
Principal Investigator:
S. Matsik
Research Associate
(404) 463-9623
smatsik@aol.com
Business Contact:
A. Perera
President
(404) 651-2709
uperera@gsu.edu
Research Institution:
n/a
Abstract
The proposed innovation is the development of a novel dual band detector responding in both the UV and IR regions, based on a GaN/AlGaN heterostructure. The IR response is based on HEterojunction Interfacial Workfunction Internal Photoemission (HEIWIP) detectors, which have been demonstrated using AlGaAs/GaAs structures. By also using interband transitions, response in the UV range can be incorporated into the device. A GaAs detector structure was shown to respond in both the NIR and FIR regions demonstrating the dual band capability. A material system change to GaN/AlGaN is expected to shift the NIR response into the UV range providing a UV-IR dual band detector. By varying the material compostion the spectral ranges can be tailored for the specific application. The initial detectors will operate in the 0.2 - 0.35 micron UV range and 8--14 micron IR range. The proposed detector would allow simultaneous imaging of both spectral ranges using a single detector array. This would provide a large advantage over current approaches which use separate detectors to image the two regions. By varying the Al fraction in the AlGaN, the detector can be easily extended to cover the range up to 40 microns.

* information listed above is at the time of submission.

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