Method for metallizing front electrode of n-type solar cell
US11961926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2019 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Oct 14, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
Abstract
The present invention relates to a method for metallizing a front electrode of an N-type solar cell, including: treating an N-type crystalline silicon substrate to form a p+ doped region and a front surface passivation anti-reflection coating on a front surface of the N-type crystalline silicon substrate in an inside-out sequence, printing an aluminum paste on the front surface passivation anti-reflection coating to form a first finger, overprinting a silver paste on the first finger to form a second finger, and printing a front silver paste on the first finger to form a busbar. In the present invention, the superposition of the second finger on the first finger can reduce line resistance while ensuring a good ohmic contact, which further improves the photoelectric conversion efficiency of solar cells. Moreover, since no grooving procedure is required, the process is simplified and cost-efficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.