The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 26, 2016
Filed:
Dec. 12, 2012
Applicant:
Wacker Chemie Ag, Munich, DE;
Inventors:
Robert Baumann, Burghausen, DE;
Robert Hoelzl, Julbach, DE;
Michael Weichselgartner, Wurmannsquick, DE;
Assignee:
Wacker Chemie AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/02 (2006.01); C01B 33/035 (2006.01); H01L 31/0368 (2006.01); C01B 33/107 (2006.01);
U.S. Cl.
CPC ...
C01B 33/02 (2013.01); C01B 33/035 (2013.01); C01B 33/10778 (2013.01); H01L 31/03682 (2013.01); Y02E 10/546 (2013.01);
Abstract
The invention provides polycrystalline silicon having concentrations of dopants of 1-10 ppta of boron, 1-20 ppta of phosphorus, 1-10 ppta of arsenic, 0.01-1 ppta of aluminum, and having a charge carrier lifetime of at least 2000 and at most 4500 μs.