Conductive pastes containing silver carboxylates

摘要

A paste composition includes a branched metal carboxylate, a solvent in which the branched metal carboxylate is soluble and a gelling agent, wherein the gelling agent is a linear metal carboxylate. The paste solvent may be an aromatic hydrocarbon solvent. The paste compositing may be free of polymeric binder. The paste may be used in forming conductive features on a substrate, including by screen printing or offset printing.

主权项

1. A composition for screen printing or flexographic printing comprising
a branched metal carboxylate, an aromatic hydrocarbon solvent in which the branched metal carboxylate is soluble, a thickening agent, wherein the thickening agent is a linear metal carboxylate, and silver nanoparticles, wherein the metal for the linear metal carboxylate and for the branched metal carboxylate is silver and further wherein the composition has a viscosity of 5,000 cps or more at room temperature and a shear rate of 1 s−1; wherein the composition contains about 10% by weight to about 90% by weight of the composition of the branched metal carboxylate, about 0.01% by weight to about 5% by weight of the composition of the linear metal carboxylate, and wherein a weight ratio of the branched metal carboxylate to the linear metal carboxylate is from about 10:1 to about 1000:1.