METHOD FOR ENHANCING ADHESION OF SILVER NANOPARTICLE INKS USING A FUNCTIONALIZED ALKOXYSILANE ADDITIVE AND PRIMER LAYER

摘要

An alkoxysilane comprising a functional group is used as an additive in the silver nanoparticle ink (1), and as an adhesion promoter (or primer layer) on the surface of a substrate (5) in order to enhance the adhesion of silver nanoparticle inks on temperature-sensitive plastic substrates. The combination of the functionalized alkoxysilane both in the ink and on the substrate's surface provides enhanced adhesion after annealing the ink at a low temperature. The adhesion of the annealed films improves from a 0B-3B level to 4B-5B when tested according to ASTM D3359. No degradation of adhesion and no change of color are observed after aging the annealed films in a humidity chamber.