Solar cell and preparation method thereof
US12408468B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Jul 25, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present disclosure provides a solar cell and a preparation method thereof, belongs to the technical field of solar cells. The preparation method of a solar cell according to the present disclosure includes: forming a passivation structure on a contact silicon layer at a back side of a silicon substrate; where the back side is a side opposite to a light incident side; removing the passivation structure located at least part of an electrode region by laser to form a contact opening, melting at least part of the contact silicon layer at the contact opening by laser, and solidifying the molten contact silicon layer to form a re-solidified structure; where the electrode region is a region configured to form a back electrode; and electroplating to form a back electrode in the electrode region on the back side of the contact silicon layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.