Feasibility Study of the Growth of Type II InAs/GaSb Superlattice on GaAs for Infrared Applications

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$99,897.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
HQ0006-04-C-7033
Award Id:
69659
Agency Tracking Number:
B041-053-0139
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1801 Maple Avenue, Evanston, IL, 60201
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
129503988
Principal Investigator:
Vahid Yazdanpanah
Technical Director
(847) 256-7648
yazdan_v@yahoo.com
Business Contact:
Manijeh Razeghi
President
(847) 256-7648
razeghi@ece.northwestern.edu
Research Institution:
n/a
Abstract
High performance infrared detectors in the mid and long wavelength infrared (MWIR and LWIR) spectral bands are highly needed in a number of missile defense missions. Type II InAs/GaSb superlattices represent the most promising material system capable of delivering a more affordable and producible focal plane array (FPA) technology than the current technology, while at the same time exhibiting similar or better performance. Two of the major challenges in the realization of FPA in this system pertain to the unintentionally doped p-type GaSb substrate used in the growth of type II superlattices: its strong infrared absorption and its thermal mismatch with the ROIC that leads to cracking upon hybridization and thus limits the FPA size. It is here proposed to study the feasibility of growing type II InAs/GaSb superlattices on GaAs substrates in spite of a lattice mismatch of ~7 %. The use GaAs is expected to avoid the substrate absorption issue since GaAs is transparent in the infrared spectral bands of interest, and alleviate the cracking issue since GaAs is harder than GaSb. The design and optimization of an appropriate buffer layer technique that leads to high quality GaSb will be an essential part of the proposed work.

* 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

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government