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:
Aug. 06, 2002
Filed:
Dec. 20, 2000
Stuart Ross Wenham, Menai Heights, AU;
Martin Andrew Green, Bronte, AU;
Unisearch Limited, Sydney, AU;
Abstract
A method of making contacts on solar cells is disclosed. The front surface ( ) of a substrate ( ) is coated with a dielectric or surface masking layer or layers ( ) that contains dopants of the opposite polarity to those used in the surface of the substrate material ( ). The dielectric layers or layers ( ) not only acts as a diffusion source for forming the emitter for the underlying substrate ( ) when heat treated, but also acts as a metallization mask during the subsequent electroless plating with solutions such as nickel and copper. The mask may be formed by laser scribing ( ) which melts the layer or layers ( ), thereby more heavily doping and exposing zones ( ) where metallization is required.