Patent ID: 8709917

Claim:
A selenium/Group 3a ink, comprising: (a) a selenium/Group 3a complex which comprises a combination of, as initial components: a selenium powder; a carboxylic acid component having a formula R—COOH, wherein R is selected from the group consisting of a C 1-10 alkyl, C 1-10 haloalkyl and a C 1-10 mercaptoalkyl; a Group 3a complex, comprising at least one Group 3a material complexed with a multidentate ligand; wherein the Group 3a material is selected from the group consisting of aluminum, indium, gallium and thallium; and wherein the multidentate ligand is selected from the group consisting of butanedionate; pentanedionate; hexanedionate; heptanedionate; cyclohexanedionate; and 1,1,1,5,5,5-hexafluoroacetylacetone; and, (b) a liquid carrier, wherein the liquid carrier is a nitrogen containing solvent selected from: an amine solvent having two nitrogen atoms per molecule, wherein the nitrogen atoms are separated by at least three carbon atoms in an aliphatic chain or the nitrogen atoms are both contained in an unsaturated ring structure; and, an amine solvent having at least three nitrogen atoms per molecule; wherein the selenium powder, the carboxylic acid component and the Group 3a complex do not form a precipitate upon combination in the liquid carrier; wherein the selenium powder and the Group 3a complex form a complex incorporating both selenium and the Group 3a material; and, wherein the selenium/Group 3a ink is hydrazine free and hydrazinium free.