Methods of printing solar cell contacts

US9343591B2 · kind B2 · utility

Assignee

• HERAEUS PRECIOUS METALS NORTH AMERICA CONSHOHOCKEN LLC · US

Inventors

• Yi Yang · San Diego, US
• Aziz S. Shaikh · San Diego, US
• Kristina McVicker · Vista, US
• Klaus Kunze · Albuquerque, US
• Srinivasan Sridharan · Strongsville, US

Key dates

• Filing date: Apr 18, 2013
• Grant date: May 17, 2016
• Expiry date: Apr 18, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/547

Abstract

Silicon solar cells and contacts thereof are printed in at least a two stage printing process where the busbars and fingerlines may be printed separately. A reduction in silver content in busbars and fingerlines through use of the techniques of the invention have been realized, including the use of certain base metals, while maintaining low contact resistance similar to silve pastes.