GaP ZnS for Blue Light Emitting Diodes

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$345,000.00
Award Year:
1993
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
18103
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Astropower, Inc.
Solar Park, Newark, DE, 19716
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Robert B. Hall
(302) 366-0400
Business Contact:
() -
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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