GaP ZnS for Blue Light Emitting Diodes

Award Information
Agency:
Department of Defense
Amount:
$345,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Missile Defense Agency
Award Year:
1993
Phase:
Phase II
Agency Tracking Number:
18103
Solicitation Topic Code:
N/A
Small Business Information
Astropower, Inc.
Solar Park, Newark, DE, 19716
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Robert B. Hall
 (302) 366-0400
Business Contact
Phone: () -
Research Institution
N/A
Abstract
AstroPower is developing a two-junction monolithic tandem solar cell composed of (AlxGa1-x)0.51In.49P lattice matched to GaAs for use as the top cell in a three-junction, two-terminal tandem stack. This tunable bandgap material system is capable of current matching, at 2.03eV, in a two-junction monolithic tandem solar cell two terminal design of (AlxGa1-x)0.51In0.49P/GaAs yielding a best case predicted efficiency of 27.2 %. This solar cell can in turn be applied as a current matched top cell on a triple-junction, two-terminal configuration with silicon solar cells with a predicted efficiency of 34.1%. The Al-Ga-In-P material system can also be useful for integration of sensor arrays, monolithic LED displays, or optical computing systems as well as ultra-bright green LED and laser technology with a bandgap as high as 2.3 eV.

* information listed above is at the time of submission.

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