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:
Mar. 29, 2011
Filed:
Sep. 02, 2009
Applicant:
Bernhard P. Piwczyk, Dunbarton, NH (US);
Inventor:
Bernhard P. Piwczyk, Dunbarton, NH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/22 (2006.01); H01L 21/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of semiconductor junction formation in Laser diffusion process for fabrication of solar cells provides for delivery of inert gases in the vicinity of the Si wafer while dopant species are being diffused form a dopant source into the surface of the wafer irradiated by a laser beam. The laser beam is emitted by CW- or pulsed operated lasers including fiber lasers. Optionally, the passivation of the surface and formation of the antireflection coating are performed simultaneously with the diffusion of the dopant species.