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Baffles Promote Wider, Thinner Silicon RibbonsSet of baffles just below exit duct of silicon-ribbon-growing furnace reduces thermal stresses in ribbons so wider ribbons grown. Productivity of furnace increased. Diverts plume of hot gas from ribbon and allows cooler gas from top of furnace to flow around. Also shields ribbon from thermal radiation from hot growth assembly. Ribbon cooled to lower temperature before reaching cooler exit duct, avoiding abrupt drop in temperature as entering duct.
Document ID
19890000418
Document Type
Other - NASA Tech Brief
Authors
Seidensticker, Raymond G. (Westinghouse Electric Corp.)
Mchugh, James P. (Westinghouse Electric Corp.)
Hundal, Rolv (Westinghouse Electric Corp.)
Sprecace, Richard P. (Westinghouse Electric Corp.)
Date Acquired
August 14, 2013
Publication Date
August 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 8
ISSN: 0145-319X
Subject Category
FABRICATION TECHNOLOGY
Report/Patent Number
NPO-17168
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.