GaP ZnS for Blue Light Emitting Diodes

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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:

Woman Owned:

Socially and Economically Disadvantaged:

Duns:

N/A

Principal Investigator

Name: Robert B. Hall
Phone: (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.

GaP ZnS for Blue Light Emitting Diodes

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