Cadmium sulfide/copper ternary heterojunction cell research. Final report, April 1, 1980-August 25, 1982
The properties of polycrystalline, thin-film CuInSe/sub 2//CdS and CuInSe/sub 2//Zn/sub x/Cd/sub 1-x/S solar cells prepared by vacuum-evaporation techniques onto metallized-alumina substrates are described. An efficiency of 10.6% for a 1 cm/sup 2/ area cell and 8.3% for an 8 cm/sup 2/ cell when tested under simulated AM1 illumination is reported. The mixed-sulfide cells are described as exhibiting increased open-circuit voltages, slightly higher short-circuit currents, and improved efficiencies. Mixed-sulfide film preparation by evaporation of CdS and ZnS powders from a single source and from two sources is discussed with preference given to the later technique. Selenide-film preparation in a planetary or rotating substrate vacuum-deposition apparatus is described. A 1 cm/sup 2/ area cell without AR-coating produced by the planetary approach is reported to demonstrate a 7.5% efficiency. The results of cell heat-treatment studies showing a strong environmental dependence are presented and indicate the desirability of an oxygen-containing atmosphere. An automatic, computer-controlled, cell-measurement system for I-V, C-V, and spectral-response analysis is described. The results of the cell-analysis and cell-modeling studies on both the plain CdS and mixed Zn/sub x/Cd/sub 1-x/S thin-film devices are presented. Finally, data obtained from constant illumination and elevated temperature life-tests on the thin-film cells showing little degradation after 9300 hours is reported.
- Research Organization:
- Boeing Aerospace Co., Seattle, WA (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 6350709
- Report Number(s):
- SERI/TR-8021-1-T1; ON: DE83000997
- Country of Publication:
- United States
- Language:
- English
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Polycrystalline thin-film CuInSe/sub 2//CdZnS solar cells
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Related Subjects
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CADMIUM SULFIDE SOLAR CELLS
CAPACITANCE
CHALCOGENIDES
COPPER COMPOUNDS
COPPER SELENIDES
CURRENTS
DATA
DATA ACQUISITION
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
EQUIPMENT
EVAPORATION
EXPERIMENTAL DATA
FABRICATION
HEAT TREATMENTS
INDIUM COMPOUNDS
INDIUM SELENIDES
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
QUANTUM EFFICIENCY
SELENIDES
SELENIUM COMPOUNDS
SOLAR CELLS
SOLAR EQUIPMENT
SPECTRAL RESPONSE
STABILITY
TEMPERATURE EFFECTS
TESTING
TRANSITION ELEMENT COMPOUNDS
VACUUM EVAPORATION
ZINC SULFIDE SOLAR CELLS