Radiation Hard Amorphous Nitride Based Solar Cell Coverglass Anti-reflective Coatings

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9453-05-M-0098
Agency Tracking Number: F051-022-0836
Amount: $99,979.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: AF05-022
Solicitation Number: 2005.1
Small Business Information
NANOHMICS, INC.
6201 East Oltorf St., Suite 400, Austin, TX, 78741
DUNS: 100651798
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Keith Jamison
 President
 (512) 389-9990
 kjamison@nanohmics.com
Business Contact
 Keith Jamison
Title: President
Phone: (512) 389-9990
Email: kjamison@nanohmics.com
Research Institution
N/A
Abstract
Solar cells are typically protected from the environment by a coverglass that has good light transmission properties in the response region of the solar cell. Newer generations of multilayer solar cells are extending the response region from the UV into the infrared portion of the spectrum to increase the efficiency of the solar cells. This is critically important for space based solar cells where the electrical output per unit weight is paramount. Unfortunately, solar cell coverglass materials have not kept up with the improvements in solar cell spectral range. It is difficult to fabricate the anti-reflective coatings and index matching layers to be efficient over the wider wavelength region of the newer solar cells. In addition for satellite power, the high radiation environments common at certain earth orbits cause the solar cell coverglass to lose transmittance (darken) through the formation of color centers in the glass or oxide materials. In this program Nanohmics proposes to examine the use of amorphous wide-bandgap nitride coatings to improve the performance radiation-resistant solar cell coverglass material. The amorphous nitrides will be used as an anti-reflective and index matching interface layer for the solar cells with the intent of increasing their spectral absorption and efficiency.

* information listed above is at the time of submission.

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