RADIATION-DISCRIMINATING IMPURITY-BAND-CONDUCTION LWIR PHOTODETECTORS

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 12220
Amount: $485,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
21831 Zuni Dr, El Toro, CA, 92630
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr B G Martin
 (714) 830-1033
Business Contact
Phone: () -
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. *

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