Solvent-based inks comprising silver nanoparticles

Abstract

High performing nanoparticle compositions suitable for printing, such as by inkjet printing, are provided herein. In particular, there is provided a conductive ink formulation comprising silver nanoparticles which has optimal performance, such as, reduced coffee ring effect, improved adhesion to substrates, and extended printhead de-cap time or latency time. The ink formulation comprises two or more solvents and a resin.

Description

technical field [0001] Disclosed herein, in various embodiments, are stable, high performance nanoparticle compositions suitable for printing, such as by inkjet printing. In particular, a conductive ink formulation comprising silver nanoparticles is provided that has optimal properties such as reduced coffee ring effect, improved adhesion to substrates, and extended print head drying time. Background technique [0002] The benefits of silver nanoparticle technology for printed electronics applications have recently been discovered. For example, ink formulations containing silver nanoparticles have demonstrated excellent printing results. However, the irreproducibility of printing performance remains a problem due to the batch-to-batch variation of silver nanoparticle powders, especially those prepared in large quantities. The main difference is the silver content. Specifically, for some batches of silver nanoparticles with a silver content of 90 wt% (which is the ratio o...

AI Technical Summary

Problems solved by technology

Deposition of conductive metal lines exhibiting a coffee ring effect and / or overly wide may limit the use of the ink in certain applications

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