Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process: Task II, LSSA Project. Quarterly report No. 3
The thermal stability of CVD SiO/sub x/N/sub y/ layers in contact with molten silicon has been studied by x-ray analysis. The results indicate that these layers are converted to the ..cap alpha.. and ..beta.. phases of Si/sub 3/N/sub 4/ with the ..beta.. phase predominating. Results to date indicate that the ..beta.. phase is the more stable form in contact with molten silicon. This explains why CVD oxynitride layers appeared to be more stable in contact with molten silicon than CVD Si/sub 3/N/sub 4/ layers in previous experiments. The oxygen present in the oxynitride layers is apparently removed during contact with the silicon melt with simultaneous conversion to Si/sub 3/N/sub 4/, principally the ..beta.. form. High-density hot-pressed Si/sub 3/N/sub 4/ has been prepared using MgO as binder. This material was found to be ..beta..-Si/sub 3/N/sub 4/ by x-ray diffractometry and displayed excellent chemical inertness to molten silicon. The purity of the material was also much superior to that of hot-pressed material purchased externally. Mullite crucibles displayed some high-temperature instability effects which may influence the bonding of CVD layers to the mullite surface. The Mark II ribbon growth apparatus has been installed and tested.
- Research Organization:
- RCA Labs., Princeton, NJ (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- NAS-7-100-954901
- OSTI ID:
- 6493875
- Report Number(s):
- DOE/JPL/954901-78/3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process. Task II: LSSA project. Quarterly report No. 4
Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process. Task II. LSA Project. Final report, October 1, 1977-March 31, 1979
Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process. Task II. LSSA Project. Quarterly report No. 5, October 1-December 31, 1978
Technical Report
·
Fri Sep 01 00:00:00 EDT 1978
·
OSTI ID:6081575
Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process. Task II. LSA Project. Final report, October 1, 1977-March 31, 1979
Technical Report
·
Fri Nov 30 23:00:00 EST 1979
·
OSTI ID:5509596
Development and evaluation of die materials for use in the growth of silicon ribbons by the inverted ribbon growth process. Task II. LSSA Project. Quarterly report No. 5, October 1-December 31, 1978
Technical Report
·
Thu Nov 30 23:00:00 EST 1978
·
OSTI ID:5927633
Related Subjects
14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTIONS
CHEMICAL VAPOR DEPOSITION
COHERENT SCATTERING
CRUCIBLES
CRYSTAL GROWTH
DEPOSITION
DIES
DIFFRACTION
DIRECT ENERGY CONVERTERS
ELEMENTS
FABRICATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LAYERS
MATERIALS TESTING
MINERALS
MULLITE
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PNICTIDES
SCATTERING
SEMIMETALS
SILICON
SILICON COMPOUNDS
SILICON NITRIDES
SILICON OXIDES
SILICON SOLAR CELLS
SOLAR CELLS
STABILITY
SURFACE COATING
TEMPERATURE EFFECTS
TESTING
X-RAY DIFFRACTION
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTIONS
CHEMICAL VAPOR DEPOSITION
COHERENT SCATTERING
CRUCIBLES
CRYSTAL GROWTH
DEPOSITION
DIES
DIFFRACTION
DIRECT ENERGY CONVERTERS
ELEMENTS
FABRICATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LAYERS
MATERIALS TESTING
MINERALS
MULLITE
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PNICTIDES
SCATTERING
SEMIMETALS
SILICON
SILICON COMPOUNDS
SILICON NITRIDES
SILICON OXIDES
SILICON SOLAR CELLS
SOLAR CELLS
STABILITY
SURFACE COATING
TEMPERATURE EFFECTS
TESTING
X-RAY DIFFRACTION