Development of high-efficiency, low-cost ZnSiAst/sub 2/ solar cells. Final report, April 9, 1979-June 8, 1980

Technical Report · Tue Jan 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/6550397· OSTI ID:6550397

Andrews, J E

A research program with an ultimate goal of fabricating a ZnSiAs/sub 2//Si-web cascade solar cell is described. Calculations indicate, given a suitable material quality, that 23% efficiencies may be possible and that the Si-web substrate and materials proposed for this cell offer the potential for meeting the cost goals of $300/peak KW/sub e/. Significant results achieved under this contract include the successful conversion of the original open tube vapor phase epitaxial growth system to an organometallic growth approach which in turn led to reduced carrier concentrations, and improved material quality. This represents the first known chalcopyrite to be deposited via the MO-CVD technique. Additionally, epitaxial growth was obtained on ..cap alpha..-Al/sub 2/O/sub 3/ and Si substrates for the first time. ZnSiAs/sub 2//Si structures have been fabricated in which carrier collection from both sides of the interface was observed using the electron beam induced current measurement technique. N-type impurity doping experiments have been initiated with the objective of synthesizing n-ZnSiAs/sub 2/ via substitutional doping. (WHK)

• Research Organization: Research Triangle Inst., Research Triangle Park, NC (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-79ET23001
• OSTI ID: 6550397
• Report Number(s): DOE/ET/23001-T6
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ARSENIC COMPOUNDS
ARSENIDES
CARRIER MOBILITY
CHALCOGENIDES
CHALCOPYRITE
CHEMICAL ANALYSIS
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COPPER COMPOUNDS
COPPER SULFIDES
CRYSTAL DOPING
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRON SCANNING
ELEMENTS
EPITAXY
EQUIPMENT
FABRICATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GERMANIUM
ION MICROPROBE ANALYSIS
IRON COMPOUNDS
IRON SULFIDES
METALS
MICROANALYSIS
MINERALS
MOBILITY
NONDESTRUCTIVE ANALYSIS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
PNICTIDES
SEMIMETALS
SILICON
SILICON ARSENIDES
SILICON COMPOUNDS
SILICON SOLAR CELLS
SOLAR CELLS
SOLAR EQUIPMENT
SUBSTRATES
SULFIDES
SULFUR COMPOUNDS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
ZINC ARSENIDES
ZINC COMPOUNDS