INDIUM PHOSPHIDE SOLAR CELLS ON SILICON SUBSTRATES

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 6803
Amount: $499,994.00
Phase: Phase II
Program: SBIR
Awards Year: 1989
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Spire Corp.
Patriots Park, Bedford, MA, 01730
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Stanley M Vernon
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
IT IS PROPOSED TO GROW INDIUM PHOSPHIDE PHOTOVOLTAIC CELLS ON SILICON SUBSTRATES. AVOIDING THE USE OF INP SUBSTRATES WILL DRASTICALLY REDUCE THE COST AND WEIGHT OF THE CELLS, WHILE THE INHERENT RADIATION RESISTANCE AND ADVANTAGE OF INP LEAD US TO EXPECT A HIGHER END-OF-LIFE EFFICIENCY THAN CAN BE ACHIEVED WITH SILICON AS THE ACTIVE MATERIAL. THE CELLS WILL BE GROWN BY METALORGANIC CHEMICAL VAPOR DEPOSITION, A TECHNIQUE WHICH IS AMENABLE TO LARGE-VOLUME PRODUCTION AND WITH WHICH EPITAXIAL GROWTH OF INP ON SI HAS ALREADY BEEN DEMONSTRATED. ALTHOUGH THE 8% DIFFERENCE IN CRYSTAL LATTICE SPACING IS EXPECTED TO RESULT IN SOME LOSS OF EFFICIENCY DUE TO THE FORMATION OF DISLOCATIONS, A NUMBER OF TECHNIQUES SHOW SOME PROMISE FOR REDUCING THE DISLOCATION DENSITY, BASED ON RECENT WORK WITH GAAS. THE GOAL OF THE PHASE I RESEARCH EFFORT WILL BE TO DEMONSTRATE THE FEASIBILITY OF FABRICATING THIS TYPE OF CELL BY ESTABLISHING A PROCESS FOR GROWING INP EPITAXIALLY ON SILICON AND EVALUATING THE RESULTING MATERIAL. ADJUSTINGTHE GROWTH PARAMETERS TO ACHIEVE THE HIGHEST FEASIBLE EFFICIENCY WILL BE THE SUBJECT OF PHASE II.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government