Solar cell contact fingers and solder pad arrangement for enhanced efficiency
US7804022B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2007 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
Abstract
A solar cell includes negative metal contact fingers electrically connected to N-type diffusion regions of the solar cell and positive metal contact fingers electrically connected to P-type diffusion regions of the solar cell. Both the N-type and P-type diffusion regions are on the backside of the solar cell. The solar cell includes a front side that faces the sun during normal operation. The negative and positive metal contact fingers may be interdigitated. For increased solar radiation collection, the metal contact fingers may be arranged to point to and collectively cover portions of a perimeter of a solder pad. For example, the negative metal contact fingers may be arranged to point to and collectively cover two or three sides of a solder pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.