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GAASP TOP SOLAR CELLS FOR INCREASED SOLAR CONVERSION EFFICIENCY

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
958
Program Year/Program:
1985 / SBIR
Agency Tracking Number:
958
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 2
Fiscal Year: 1985
Title: GAASP TOP SOLAR CELLS FOR INCREASED SOLAR CONVERSION EFFICIENCY
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $423,600.00
 

Abstract:

GAASP SOLAR CELLS PLACED ON TOP OF CONVENTIONAL SILICON SOLAR CELL ARRAYS CAN INCREASE THE ENERGY CONVERSION EFFICIENCY OF THE SYSTEM AS MUCH AS 100%. ASTROPOWER DIVISION OF ASTROSYSTEMS, INC. PROPOSES TO DEVELOP A HIGH BAND GAP TOP SOLAR CELL FOR ATTACHMENT TO CONVENTIONALS ILICON SOLAR CELLS. TRANSPARENT GAP SUBSTRATES WILL BE USED WITH EPITAXIALLY GROWN LAYERS OF GAASPH HAVING A BAND GAP OF 1.75 TO 2.1 EVAPPROPRIATE FOR MAXIMUM ABSORPTION FOR A TOP CELL WITH A SILICON BASE.THE GAASP SYSTEM HAS LESS MOISTURE AND OXIDATION SENSITIVITY AND IS MORE STABLE FOR ELECTRICAL CONTACTS THAN THE GAALAS ALTERNATIVE SYSTEM. AN ADDITIONAL BENEFIT FOR THE PROGRAM IS THAT THE ASTROPOWER DIVISION SENIOR PERSONNEL HAVE SUBSTANTIAL COMMERCIAL EXPERIENCE WITH THE PREPARATION OF GAASP AND GAP LIGHT EMITTING DIODES AND ARRAYS, AND ARE QUITE FAMILIAR WITH THE GAASP MATERIAL SYSTEMS. THE KEY TECHNICAL TASKS ARE LIQUID PHASE EPITAXY OF THE GAASP LAYERS, AND SYSTEMATIC SOLAR DESIGN AND FABRICATION. VARIOUS APPROACHES TO COMPOSITION GRADING TO MINIMIZE THE EFFECT OF LATTICE MISMATCH WILL BE EXPLORED EXPERIMENTALLY. LOSS MINIMIZATION WILL ALSO BE USED TO OPTIMIZE THE TANDEM DESIGN.

Principal Investigator:

James B. Mcneely
3023660400

Business Contact:

Small Business Information at Submission:

Astrosystems Inc.
30 Lovett Ave Neward, DE 19711

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