High Efficiency Lightweight Triple Junction GaAs Solar Cells

Award Information
Agency:
Department of Defense
Branch
Office of the Secretary of Defense
Amount:
$749,962.00
Award Year:
2008
Program:
SBIR
Phase:
Phase II
Contract:
FA9453-08-C-0110
Agency Tracking Number:
O071-ES4-1039
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
MICROLINK DEVICES
6457 Howard Street, Niles, IL, 60714
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
135553472
Principal Investigator:
Noren Pan
President
(847) 588-3001
npan@mldevices.com
Business Contact:
Noren Pan
President
(847) 588-3001
npan@mldevices.com
Research Institution:
n/a
Abstract
The significance of the innovation in this Phase II SBIR is the development of a low cost lightweight multi-bandgap GaAs semiconductor material for high efficiency multijunction solar cells for space applications. This effort will advance space solar cell development by improvements in the efficiency and weight of GaAs based solar cells. This will be accomplished by applying our lift-off process to a triple junction bandgap structure on GaAs substrates. The complete elimination of the GaAs substrate from the solar cell active area is the pathway to significant weight reduction. The triple junction structure will consist of lattice-matched InGaP, GaAs, and InGaAs (1.0 eV) cells to capture a majority of the solar spectrum in space. The efficiency target is 29% under 1 sun AM1.5 for the lifted-off solar cell. The cost reduction target is 50% using a combination of recycled GaAs substrates from the lift-off process and large area 6-inch GaAs substrates.

* information listed above is at the time of submission.

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