Compositions – Electrically conductive or emissive compositions – Free metal containing
Reexamination Certificate
2005-04-14
2009-02-24
Kopec, Mark (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Free metal containing
C257S768000
Reexamination Certificate
active
07494607
ABSTRACT:
The present invention is directed to an electroconductive thick film composition comprising: (a) electroconductive metal particles selected from (1) Al, Cu, Au, Ag, Pd and Pt; (2) alloy of Al, Cu, Au, Ag, Pd and Pt; and (3) mixtures thereof; (3) glass frit wherein said glass frit is Pb-free; dispersed in (d) an organic medium, and wherein the average diameter of said electroconductive metal particles is in the range of 0.5-10.0 μm. The present invention is further directed to an electrode formed from the composition as detailed above and a semiconductor device(s) (for example, a solar cell) comprising said electrode.
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Hang Kenneth Warren
Wang Yueli
E.I. du Pont de Nemours and Company
Kopec Mark
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