RADIATION-DISCRIMINATING IMPURITY-BAND-CONDUCTION LWIR PHOTODETECTORS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$485,000.00
Award Year:
1991
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
12220
Agency Tracking Number:
12220
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
21831 Zuni Dr, El Toro, CA, 92630
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr B G Martin
(714) 830-1033
Business Contact:
() -
Research Institution:
n/a
Abstract
THE INNOVATIVE PROPOSED HERE IS THE DEVELOPMENT OF A NEW TYPE OF RADIATION-DISCRIMINATING, LONG-WAVELENGTH INFRARED (LWIR) DETECTOR BASED ON IMPURITY-BAND-CONDUCTION (IBC). THE NEW CONFIGURATION ENABLES ONE TO DISCRIMINATE BETWEEN GAMMA-RAY AND LWIR-INDUCED EVENTS. PAST USE OF IBC PHOTODETECTORS HAS SHOWN THAT INJECTED DARK CURRENT FROM THE CONTACTS IS A MAJOR PROBLEM LIMITING THEIR USE. FOR THE IBC CONFIGURATION OF INTERET HERE, THE USE OF A BIAS-DEPENDENT SUPERLATTICE (SL) TUNNELING STRUCTURE IS PROPOSED IS THE EXPLOITATION OF THE FACT THAT THERE IS A CRITICAL BIAS BELOW WHICH IBC IS ESSENTIALLY RANDOM AND ABOVE WHICH IBC IS PARALLEL TO THE ELECTRIC FIELD. THIS MAKES POSSIBLE THE STORAGE OF LWIR-GENERATED IONIZED DONORS AND ALSO THE READ-OUT OF GAMMA-RAY GENERATED ELECTRONS AND HOLES. THE IONIZED DONORS AREPERIODICALLY READ-OUT AND THIS FORMS THE BASIS OF LWIR DETECTION. PHASE I WOULD BE A FEASIBILITY STUDY, INCLUDING THE DETERMINATION OF THE OPTIMUM DEVICE DESIGN, OPERATING PARAMETERS, AND EXPECTED CURRENT VS. BIAS BEHAVIOR IN THE PRESENCE OF GAMMA-RAYS. THIS PHASE II GOAL IS THE SUCCESSFUL FABRICATION AND TESTING OF THIS DEVICE.

* information listed above is at the time of submission.

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