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:
Jun. 15, 2021
Filed:
Mar. 28, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Minato Seno, Osaka, JP;
Hiroyuki Yamada, Osaka, JP;
Abstract
A solar cell includes: a silicon substrate including a texture structure in a first principal surface; and a first non-crystalline silicon layer formed on the first principal surface of the silicon substrate and including recesses and protrusions reflecting the texture structure. At a valley portion in the recesses and protrusions, the first non-crystalline silicon layer includes, in the stated order: a first epitaxial layer including a crystalline region epitaxially grown on the silicon substrate; a first amorphous layer which is a non-crystalline silicon layer; and a second amorphous layer which is a non-crystalline silicon layer. The density of the first amorphous layer is less than the density of the second amorphous layer.