Laser beam shaping for foil-based metallization of solar cells
US11817512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | May 23, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Approaches for foil-based metallization of solar cells and the resulting solar cells are described. For example, a method of fabricating a solar cell involves locating a metal foil above a plurality of alternating N-type and P-type semiconductor regions disposed in or above a substrate. The method also involves laser welding the metal foil to the alternating N-type and P-type semiconductor regions. The method also involves patterning the metal foil by laser ablating through at least a portion of the metal foil at regions in alignment with locations between the alternating N-type and P-type semiconductor regions. The laser welding and the patterning are performed at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.