VERY LOW-COST/HIGH-EFFICIENCY THIN-FILM SILICON PHOTOVOLTAIC TECHNOLOGY

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 27116
Amount: $74,992.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Spire Corp.
1 Patriots Pk, Bedford, MA, 01730
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr Anton C Greenwald
 (617) 275-6000
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE GOAL OF THIS PROJECT IS TO ACHIEVE A COST REDUCTION ON THE ORDER OF 50% IN THIN-FILM PHOTOVOLTAIC (PV) TECHNOLOGY BY DEVELOPING A HIGH-EFFICIENCY CHEMICAL VAPOR DEPOSITION (CVD) SILICON CELL UTILIZING A LOW-COST SUBSTRATE. IN PHASE I A SURFACE RELIEF STRUCTURE WILL BE FORMED ON A GLASS SUBSTRATE BY MAKING A NEGATIVE REPLICA OF A REUSABLE TEXTURE-ETCHED SILICON SURFACE. A THIN SILICON FILM WILL BE DEPOSITED ON THIS TEXTURED SUBSTRATE BY CVD FROM SILANE AND THEN RECRYSTALLIZED BY RAPID THERMAL ANNEALING. THE ARTIFICIAL SURFACE RELIEF WILL INDUCE A PREFERRED ORIENTATION OF THE REGROWN CRYSTALLITES (GRAPHOEPITAXY) SO THAT THE FILM HAS A NEARLY SINGLE CRYSTAL, OR AT LEAST LARGED-GRAINED ( 1 MM), STRUCTURE. IN PHASE II, A CELL STRUCTURE WITH ALL CONTACTS ON THE BACK SURFACE WILL BE FABRICATED, THE TEXTURED GLASS SUBSTRATE BECOMING THE LIGHT-TRAPPING FRONT COVER OF THE CELL. ALTHOUGH HIGHLY INNOVATIVE, THIS APPROACH IS AT AN ACCEPTABLY LOW LEVEL OF RISK BECAUSE IT IS BASED UPON THE SYNTHESIS OF FIVE PREVIOUSLY DEMONSTRATED TECHNOLOGIES: GRAPHOEPITAXY, SCANNED RECRYSTALLIZATION, INTERDIGITATED BACK CONTACT CELL STRUCTURES, LIGHT TRAPPING, AND HIGH LIFETIME CVD SILICON.

* 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