Polycrystalline silicon rod for zone reflecting and a...

Details Polycrystalline silicon rod for zone reflecting and a... Polycrystalline silicon rod for zone reflecting and a...

2011-05-10

2011-05-10

McNeil, Jennifer C (Department: 1784)

Stock material or miscellaneous articles

Composite

Of silicon containing

C264S081000, C423S348000, C423S349000, C423S350000, C427S248100, C428S448000

Reexamination Certificate

active

07939173

ABSTRACT:
The invention relates to a polysilicon rod for FZ applications obtainable by deposition of high-purity silicon from a silicon-containing reaction gas, which has been thermally decomposed or reduced by hydrogen, on a filament rod. The polysilicon rod contains, surrounding the filament rod, an inner zone having but few needle crystals, small in size, an outer zone having a relatively small amount of larger needle crystals, and a smooth transition zone between the inner and outer zones. The polysilicon rods are obtained in high yield and can be refined in one pass in an FZ process.

REFERENCES:
patent: 3540871 (1970-11-01), Dyer et al.
patent: 4255463 (1981-03-01), Rucha et al.
patent: 4426408 (1984-01-01), Dietze
patent: 5310531 (1994-05-01), Ikeda et al.
patent: 5976481 (1999-11-01), Kubota et al.
patent: 6060021 (2000-05-01), Oda
patent: 6676916 (2004-01-01), Keck et al.
patent: 2003/0015078 (2003-01-01), Taylor
patent: 2006/0249200 (2006-11-01), Kato et al.
patent: 2008/0053232 (2008-03-01), Hegen et al.
patent: 1194624 (1998-09-01), None
patent: 27 27 305 (1979-01-01), None
patent: 3107260 (1982-09-01), None
patent: 10 2006 040 486 (2008-03-01), None
patent: 0 445 036 (1998-07-01), None
Machine English Translation of DE 2727305 provided by the EPO website, Retrieval date of Sep. 22, 2010.
English Abstract corresponding to DE 27 27 305, published Jan. 4, 1979.
Schumann et al., Metallografie (Meetallography), Wiley-VCH, 2005, 14th Edition, 5 pgs.

Affiliated with

Also associated with

Rating

Polycrystalline silicon rod for zone reflecting and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polycrystalline silicon rod for zone reflecting and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polycrystalline silicon rod for zone reflecting and a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2640517