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:
Feb. 23, 2021
Filed:
Jan. 25, 2019
Panasonic Corporation, Osaka, JP;
Daisuke Fujishima, Osaka, JP;
Hirotaka Katayama, Osaka, JP;
PANASONIC CORPORATION, Osaka, JP;
Abstract
A solar cell includes a photoelectric converter having a p-type surface and an n-type surface on a principal surface, a p-side conductor, a p-side Sn layer, an n-side conductor, an n-side Sn layer, a p-side seed layer between the p-type surface and p-side conductor, an n-side seed layer between the n-type surface and n-side conductor, a p-side metal layer covering the p-side seed layer and including metal different from metal of the p-side seed layer, and an n-side metal layer covering the n-side seed layer and including metal different from metal of the n-side seed layer. The diffusion coefficient of copper with respect to the p-side metal layer is less than the diffusion coefficient of copper with respect to a p-side Sn layer. The diffusion coefficient of copper with respect to the n-side metal layer is less than the diffusion coefficient of copper with respect to an n-side Sn layer.