Conductive Metallic and Semiconductor Ink Composition

A composition comprising:

• a plurality of alloyed metal and semiconductor nanoparticles, each alloyed metal and semiconductor nanoparticle of the plurality of alloyed metal and semiconductor nanoparticles greater than or equal to 1 micron and less than or equal to 8 microns, comprising an alloy of at least one metal and at least one semiconductor, further having a surface passivation and present in an amount of between 40% to 95% by weight of the composition;
• a first solvent comprising glycerin and present in an amount of between 3.5% to 35% by weight of the composition;
• a second solvent comprising glutaric acid and present in an amount of between 0.5% to 15% by weight of the composition;
• and
• a third, volatile solvent comprising butanol and present in an amount of between 0.5% to 10% by weight of the composition.

A composition comprising:

• a plurality of alloyed metal and semiconductor nanoparticles, each alloyed metal and semiconductor nanoparticle of the plurality of alloyed metal and semiconductor nanoparticles greater than or equal to 1 micron and less than or equal to 8 microns, and present in an amount of between 40% to 95% by weight of the composition, the plurality of alloyed metal and semiconductor nanoparticles further comprising a dopant selected from the group consisting of:
• boron, arsenic, phosphorus, gallium, and mixtures thereof, wherein at least one alloyed metal and semiconductor nanoparticle of the plurality of alloyed metal and semiconductor nanoparticles is surface passivated with at least a partial coating selected from the group consisting of:
• benzotriazole, zinc phosphate, zinc dithiophosphate, tannic acid, hexafluoroacetylacetone, and mixtures thereof;
• a first solvent comprising glycerin and present in an amount of between 3.5% to 35% by weight of the composition;
• a second solvent comprising glutaric acid and present in an amount of between 0.5% to 15% by weight of the composition;
• a third, volatile solvent comprising butanol and present in an amount of between 0.5% to 10% by weight of the composition;
• an antioxidant selected from the group consisting of:
• N,N-diethylhydroxylamine, ascorbic acid, hydrazine, hexamine, phenylenediamine, and mixtures thereof;
• and
• at least one organic acid selected from the group consisting of:
• carboxylic acids, tricarboxylic acids, alkyl carboxylic acids, acetic acid, oxalic acid, mellitic acid, formic acid, chloroacetic acid, benzoic acid, trifluoroacetic acid, propanoic acid, butanoic acid;
• and mixtures thereof;
• wherein the composition has a viscosity substantially between 50 cps and 25,000 cps at 25° C.