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. 07, 2021
Filed:
Nov. 27, 2020
Zhejiang Jinko Solar Co., Ltd., Zhejiang, CN;
Jinko Solar Co., Ltd., Jiangxi, CN;
ZHEJIANG JINKO SOLAR CO., LTD., Haining, CN;
JINKO SOLAR CO., LTD., Jiangxi, CN;
Abstract
Disclosed is a solar cell, including: a substrate; an emitter, a first passivation film, an antireflection film and a first electrode sequentially disposed on an upper surface of the substrate; a tunneling layer, a retardation layer, a field passivation layer, a second passivation film and a second electrode sequentially disposed on a lower surface of the substrate. The retardation layer is configured to retard a migration of a doped ion in the field passivation layer to the substrate. The retardation layer includes a first retardation sub-layer overlapping with a projection of the second electrode and a second retardation sub-layer misaligning with a projection of the second electrode, and at least the second retardation sub-layer is an intrinsic semiconductor. A thickness of the first retardation sub-layer is smaller than a thickness of the second retardation sub-layer in a direction perpendicular to the surface of the substrate.