CONDUCTIVE PASTE FOR A SOLAR CELL ELECTRODE

摘要

The invention relates to a conductive paste composition useful in the manufacture of photovoltaic cell electrodes, especially electrodes contacting the p-type emitter of an n-type base cell. The paste composition may comprise a source of a conductive metal, a glass frit such as a lead borate, aluminum metal powder, and a boron source that may be at least one of elemental boron, a non-oxide, boron-containing substance, or a combination thereof, all dispersed in an organic vehicle that renders the composition suitable for screen printing or other like application method. Also provided are a semiconductor device such as a photovoltaic cell having an electrode made with the paste composition, and a method for its manufacture.

主权项

1. A paste composition comprising:
(a) a source of silver metal; (b) 0.5% to 5% of a fusible material comprising two or more intimately mixed oxides selected from the group consisting of lead oxide (PbO), boron oxide (B2O3), zinc oxide (ZnO), bismuth oxide (Bi2O3), silicon oxide (SiO2), aluminum oxide (Al2O3), and barium oxide (BaO); (c) 0.1% to 4% of a boron source comprising at least one of elemental boron, a non-oxide, boron-containing compound, or a combination thereof; and (d) an organic vehicle in which components (a) to (c) are dispersed, wherein the percentages are based on weight of the paste composition.