Back-side metal electrode of N-type TOPCon solar cell, and method for preparing back-side metal electrode of N-type TOPCon solar cell, and N-type TOPCon solar cell
US12230723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2021 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | May 10, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
Abstract
Some embodiments of the present invention relate to a technical field of N-type TOPCon solar cells, and disclose a back-side metal electrode of an N-type TOPCon solar cell. The back-side metal electrode includes a substrate, a plurality of first silver fine grids disposed on a passivation film which is on a back side of the substrate, a plurality of second aluminum fine grids overlaid on the plurality of first silver fine grids, and a plurality of first silver main grids disposed perpendicular to the plurality of first silver fine grids. Each of the plurality of first silver main grids is a segmented structure. The back-side metal electrode further includes a plurality of second aluminum main grids, which are formed, in a printing manner, between any two adjacent grid segments of a plurality of grid segments and around each of the plurality of grid segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.