Lattice Matched Substrates for Mercury Cadmium Telluride growth by MBE

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: W9113M-06-C-0031
Agency Tracking Number: 053-0523
Amount: $99,957.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: MDA05-008
Solicitation Number: 2005.3
Small Business Information
EPIR TECHNOLOGIES, INC.
590 Territorial Drive, Suite B, Bolingbrook, IL, 60440
DUNS: 068568588
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Rasdip Singh
 Engineer
 (630) 771-0203
 rsingh@epir.com
Business Contact
 Sivalingam Sivananthan
Title: President
Phone: (630) 771-0201
Email: ssivananthan@epir.com
Research Institution
N/A
Abstract
Many advanced HgCdTe (MCT) infrared detector structures are grown by the molecular beam epitaxy (MBE) technique, which is especially sensitive to small imperfections, impurities, precipitates, and polishing damage on the substrate surface. In order to achieve very high crystalline quality MCT structures, the substrate surface must be of superior quality (MBE-quality). EPIR demonstrated the ability to create superior CZT surfaces using innovative non-contact and pressure dependent polishing methods and our proprietary chemical polishing solutions. Our polished CZT substrates were qualified by growing MCT epi-layers by MBE. These MBE epi-layers exhibited state-of-the-art X-ray FWHM values and low (10^5 cm-2) etch pit density. In the Phase I effort, we will substantially improve the quality of our CZT substrate surfaces using the new, fully automated, ultra-high-precision polishing system designed and fabricated by EPIR. The system is capable of batch polishing very large (up to 64 cm^2) area substrates. We propose innovative ideas to create a true "epi-ready" CZT surface and eliminate the need for end-user surface pretreatments prior to MBE growth. We will grow and characterize MCT by MBE to qualify our polished substrates and work with our industrial partners to commercialize "epi-ready" MBE-quality CZT substrates.

* information listed above is at the time of submission.

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