Nanoparticle paste formulations and methods for production and use thereof

A nanoparticle paste formulation comprising:

• an organic matrix comprising one or more organic solvents, the one or more organic solvents comprising a hydrocarbon, an alcohol, an amine, and an organic acid;
• and
• a plurality of metal nanoparticles dispersed in the organic matrix, the plurality of metal nanoparticles comprising about 70% to about 90% of the nanoparticle paste formulation by weight;
• wherein the metal nanoparticles have a surfactant coating thereon, the surfactant coating comprising one or more surfactants.

A method comprising:

• providing a plurality of metal nanoparticles having a surfactant coating thereon;
• and
• combining the plurality of metal nanoparticles with an organic matrix to form a nanoparticle paste formulation;
• wherein the plurality of metal nanoparticles comprise about 70% to about 90% of the nanoparticle paste formulation by weight;
• and
• wherein the organic matrix comprises one or more organic solvents, the one or more organic solvents comprising a hydrocarbon, an alcohol, an amine, and an organic acid.

A method comprising:

• providing a nanoparticle paste formulation comprising an organic matrix and a plurality of metal nanoparticles dispersed in the organic matrix, the plurality of metal nanoparticles comprising about 70% to about 90% of the nanoparticle paste formulation by weight and the organic matrix comprising one or more organic solvents;
• wherein the one or more organic solvents comprise a hydrocarbon, an alcohol, an amine, and an organic acid;
• dispensing the nanoparticle paste formulation onto a substrate;
• and
• at least partially consolidating the metal nanoparticles with one another by heating the dispensed nanoparticle paste formulation at a temperature at or above a fusion temperature of the metal nanoparticles.