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:
Sep. 06, 2022
Filed:
Feb. 18, 2020
Sunpower Corporation, San Jose, CA (US);
Gabriel Harley, Mountain View, CA (US);
David D. Smith, Campbell, CA (US);
Tim Dennis, Canton, FL (US);
Ann Waldhauer, La Honda, CA (US);
Taeseok Kim, San Jose, CA (US);
Peter John Cousins, Menlo Park, CA (US);
SunPower Corporation, San Jose, CA (US);
Abstract
Contact holes of solar cells are formed by laser ablation to accommodate various solar cell designs. Use of a laser to form the contact holes is facilitated by replacing films formed on the diffusion regions with a film that has substantially uniform thickness. Contact holes may be formed to deep diffusion regions to increase the laser ablation process margins. The laser configuration may be tailored to form contact holes through dielectric films of varying thicknesses.