Patent ID: 8894760

Claim:
A Group 3a ink, comprising, as initial components: a polyamine solvent; a Group 3a material/organic complex, wherein the Group 3a material/organic complex is a Group 3a material/carboxylate complex comprising an indium cation complexed with at least one carboxylate anion selected from 2-ethylhexanoate, 2-ethylbutyrate, acetylacetonoate, trimethylacetate, acetate, formate and isovalerate; and, a reducing agent selected from ammonium formate, formic acid, ammonium oxalate, heptaldehyde and oxalic acid; wherein the molar ratio to the Group 3a material/organic complex is at least 10:1; wherein the Group 3a ink is a stable dispersion and wherein the Group 3a ink is hydrazine and hydrazinium free.