Development of Advanced Anti-Reflection Coatings for High Performance Solar Energy Applications

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$125,000.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
NNX13CC59P
Agency Tracking Number:
124333
Solicitation Year:
2012
Solicitation Topic Code:
S3.02
Solicitation Number:
n/a
Small Business Information
MicroLink Devices
IL, Niles, IL, 60714-3301
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
135553472
Principal Investigator:
Victor Elarde
Senior Engineer
(847) 588-3001
velarde@mldevices.com
Business Contact:
David McCallum
Business Official
(847) 588-3001
dmccallum@mldevices.com
Research Institution:
Stub




Abstract
MicroLink and its subcontractor Magnolia Solar will develop and demonstrate advanced anti-reflection coating (ARC) designs that will provide a better broadband and angular response than that of current coatings. Advanced coatings of this nature are needed to realize the full potential forthcoming generation of multi-junction solar cells that will contain four or more junctions. We will undertake several approaches to this problem:* investigate new dielectric materials that will allow a refractive index intermediate between those of the materials that are currently in common use as ARCs;* investigate a dielectric codeposition processes that will allow the fabrication of materials with a wide range of refractive indices; and* investigate oxidation of Al-containing III-V semiconductor compounds as a mechanism for forming a more transparent window layer.Based on the results of these investigations, we will fabricate and test on III-V triple-junction solar cells the best-identified candidates for improved anti-reflection coating. If successful, the new coating designs will have a reflectance less than 5% over the spectral range 300 nm to 1800 nm and over a wide range of incident angles. The coatings will be completely compatible with inverted metamorphic (IMM) multi-junction solar cell technology and will be optically matched to IMM solar cells. We expect the new coatings will enable a relative efficiency increase of at least 7%, corresponding to a 2.5% absolute efficiency increase.

* information listed above is at the time of submission.

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