Back-contact solar cells and methods for fabrication
US7144751B2 · kind B2 · utility
73Cited by
80References
17Claims
0Family size
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Key dates
| Filing date | Feb 3, 2005 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Feb 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/928
Abstract
Methods for fabrication of emitter wrap through (EWT) back-contact solar cells and cells made by such methods. Certain methods provide for higher concentration of dopant in conductive vias compared to the average dopant concentration on front or rear surfaces, and provided increased efficiency. Certain methods provide for selective doping to holes for forming conductive vias by use of printed dopant pastes. Other methods provide for use of spin-on glass substrates including dopant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.