Advanced Fullerene Thermal Protection for Exterior Aircraft Structures

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N992-5066
Agency Tracking Number: N992-5066
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1999
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
MER CORP.
7960 S. Kolb Rd., Tucson, AZ, 85706
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 E Veksler
 (520) 574-1980
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Not Available Photodetectors operating at 8-15 mm and beyond are of great importance for commercial and military applications in infrared (IR) thermal imaging. InAs/InGaSb type-II quantum wells (QWs) have advantages over HgCdTe for applications requiring higher temperature and longer wavelength operation. The type-II QW photodiodes would have comparable quantum efficiency and smaller dark current due to a larger effective mass, and enhanced lifetimes due to much slower Auger recombination rates, and hence much longer carrier lifetime. Through careful bandgap engineering, we have suppressed the Auger coefficient by a factor > 8 for 4.5-mm type-II QW mid-IR lasers at 300 K. With improved MBE growth technology, we have improved the responsivity of type-II photoconductors by a factor 50, due to the improved interface quality. Currently, we have demonstrated among the best performance of photoconductors using III-V materials up to 14 mm. Recently, we have demonstrated a four times better photoresponse of 13 mm photoconductor from InAs/InGaSb superlattice layers grown on GaAs compliant substrate compared to that on GaSb substrate. In this program, we will develop both the growth of large two-dimensional arrays of IR photodetectors based on InAs/InGaSb type-II QWs at 8 to 15 mm and 2 inch GaAs universal compliant substrate technology.

* 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