Conductive metal paste for a metal-wrap-through silicon solar cell

Abstract

A conductive metal via paste comprising particulate conductive metal, phosphorus-containing material, glass frit, and an organic vehicle. is particularly useful in providing the metallization of the holes in the silicon wafers of MWT solar cells. The result is a metallic electrically conductive via between the collector lines on the front side and the emitter electrode on the back-side of the solar cell. The paste can also be used to form the collector lines on the front-side of the solar cell and the emitter electrode on the back-side of the solar cell. Also disclosed are metal-wrap-through silicon solar cells comprising the fired conductive metal paste.

Dependencies are inferred from the claim text.