Photovoltaic mechanisms in polycrystalline thin film silicon solar cells. Quarterly technical progress report No. 1, July 30-October 31, 1980
Major accomplishments during the first quarter of the contract period are reported. Small area diode fabrication and analysis has been continued. This technique has further been applied to many RTR ribbons. An optical technique for determination of crystallite orientations has been placed in operation. This technique has many distinct advantages. These are: (1) rapid; (2) can be set-up very inexpensively; (3) well suited for polycrystalline substrates of small grain size; and (4) can easily characterize twins. Accuracies obtained with this technique are about the same as that of the Laue technique. A technique to qualitatively evaluate grain boundary activity in unprocessed substrates has been used and valuable results obtained. Further analysis is being done to use this technique for quantitative evaluation. A major study of G.B. orientation effects is underway. Initial results on RTR ribbons have shown a good correlation of G.B. barrier height with misorientation (tilt boundaries).
- Research Organization:
- Motorola, Inc., Phoenix, AZ (USA). Solar Energy Dept.
- Sponsoring Organization:
- USDOE, Office of Solar Energy
- DOE Contract Number:
- AC02-77CH00178
- OSTI ID:
- 6620390
- Report Number(s):
- DOE/SERI-9234/1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
SILICON
GRAIN BOUNDARIES
GRAIN ORIENTATION
SILICON SOLAR CELLS
FABRICATION
CRYSTAL DEFECTS
ELECTRICAL PROPERTIES
ETCHING
PERFORMANCE
POLYCRYSTALS
RECOMBINATION
SUBSTRATES
CRYSTAL STRUCTURE
CRYSTALS
DIRECT ENERGY CONVERTERS
ELEMENTS
EQUIPMENT
MICROSTRUCTURE
ORIENTATION
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SEMIMETALS
SOLAR CELLS
SOLAR EQUIPMENT
SURFACE FINISHING
silicon solar cells
silicon
polycrystals
grain boundaries
crystal defects
grain orientation
recombination
fabrication
etching
substrates
performance
electrical properties
140501* - Solar Energy Conversion- Photovoltaic Conversion
360601 - Other Materials- Preparation & Manufacture