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Title: 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

Abstract

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)

Authors:
; ; ;
Publication Date:
Research Org.:
Motorola, Inc., Phoenix, AZ (USA). Semiconductor Group
Sponsoring Org.:
USDOE, Office of Solar Energy
OSTI Identifier:
5381026
Report Number(s):
DOE/SERI-8119-3/1
DOE Contract Number:  
EG-77-C-01-4042
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 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

Citation Formats

Liaw, M, Secco, F, Ingle, B, and Down, D. 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. United States: N. p., 1980. Web. doi:10.2172/5381026.
Liaw, M, Secco, F, Ingle, B, & Down, D. 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. United States. https://doi.org/10.2172/5381026
Liaw, M, Secco, F, Ingle, B, and Down, D. Fri . "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". United States. https://doi.org/10.2172/5381026. https://www.osti.gov/servlets/purl/5381026.
@article{osti_5381026,
title = {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},
author = {Liaw, M and Secco, F and Ingle, B and Down, D},
abstractNote = {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)},
doi = {10.2172/5381026},
url = {https://www.osti.gov/biblio/5381026}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {2}
}