Sequential purification and crystal growth for the production of low cost silicon substrates. Quarterly technical progress report No. 1, 15 September 1979-31 December 1979
Over the past several years, Motorola's Materials Technology Laboratory (MTL), has been conducting several projects with goals directed at the production of high quality low cost silicon crystals. One of the projects which is being investigated is the direct purification of MG-Si. A unique characteristic of the approach used by this project is the use of a crystal puller to perform both purification and crystal growth. Sequential steps of purification were taken. By the completion of this series of purification, the purified MG-Si melt will be further purified by impurity redistribution using ingot pulling. The final purified silicon will be in an ingot form of desired dimensions for slicing into silicon sheets. The sequential steps of purification include: (1) leaching of MG-Si charge, (2) phase separation, (3) reactive gas treatment, (4) liquid-liquid extraction (called Slagging), and (5) purification by redistribution of impurities using ingot pulling. Progress on items (1) and (2) is reported. (WHK)
- Research Organization:
- Motorola, Inc., Phoenix, AZ (USA). Semiconductor Group
- Sponsoring Organization:
- USDOE, Office of Solar Energy
- DOE Contract Number:
- EG-77-C-01-4042
- OSTI ID:
- 5381026
- Report Number(s):
- DOE/SERI-8119-3/1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sequential purification and crystal growth for the production of low cost silicon substrates. Quarterly technical progress report No. 2, 1 January 1980-31 March 1980
Sequential purification and crystal growth for the production of low cost silicon substrates. Final technical report, September 15, 1979-January 1, 1982
Related Subjects
36 MATERIALS SCIENCE
SILICON
CRYSTAL GROWTH
PURIFICATION
CRUCIBLES
CUTTING
ELECTRIC CONDUCTIVITY
GRAIN SIZE
IMPURITIES
LEACHING
RESEARCH PROGRAMS
SILICON SOLAR CELLS
SUBSTRATES
CRYSTAL STRUCTURE
DIRECT ENERGY CONVERTERS
DISSOLUTION
ELECTRICAL PROPERTIES
ELEMENTS
EQUIPMENT
MACHINING
MICROSTRUCTURE
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SEMIMETALS
SEPARATION PROCESSES
SIZE
SOLAR CELLS
SOLAR EQUIPMENT
140501* - Solar Energy Conversion- Photovoltaic Conversion
360601 - Other Materials- Preparation & Manufacture