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

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$74,992.00
Award Year:
1994
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
27116
Agency Tracking Number:
27116
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1 Patriots Pk, Bedford, MA, 01730
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Anton C Greenwald
(617) 275-6000
Business Contact:
() -
Research Institute:
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

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government