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AlGaInP/GaAs 27% Efficient Top Solar Cells

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
18059
Program Year/Program:
1992 / SBIR
Agency Tracking Number:
18059
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
ASTROPOWER, INC.
Solar Park Newark, DE 19716
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1992
Title: AlGaInP/GaAs 27% Efficient Top Solar Cells
Agency / Branch: DOD / MDA
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

AstroPower will develop a two-junction monolithic tandem solar cell composed of (AlxGa1-x)0.51 In(0.49)P, which is lattice matched to GaAs, as the top cell in a three-junction, two-terminal tandem solar cell. This new tunable bandgap Al-Ga-In-P material is capable of current matching in a two-junction monolithic tandem solar cell two-terminal design of the Al-Ga-In-P over GaAs yielding a best case predicted efficiency of 27.2%. The direct bandgap of the material system can be tuned to as high as 2.3 eV, where a bandgap of 2.03 eV is necessary for current matching in a two-terminal stack. The tandem solar cell can in turn be applied as a current-matched top solar cell in a triple-junction, two terminal configuration with silicon or other suitable bottom solar cells. The success of this project will lead to deployment of high performance solar cells in the space environment, and will impact the longevity and power generation of space power supplies.

Principal Investigator:

Louis C. Dinetta
3023660400

Business Contact:

Small Business Information at Submission:

Astropower, Inc.
Solar Park Newark, DE 19716

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No