Patent ID: 8765223

Claim:
A process of making a ternary metal chalcogenide alloy film on a substrate comprising steps of: (a) contacting the substrate with a silyl-chalcogen selected from the group consisting of silyltellurium and silylselenium; (b) contacting the substrate with at least one germanium compound selected from the group consisting of GeX 4 , wherein X is a neucleophilic group selected from the group consisting of OR (alkoxy), CN (cyano), OCN (cyanate), SCN (thiocyanate), carboxylic groups and mixtures thereof; (R 1 O) 4 Ge or (R 1 O) n GeH 4-n , where R 1 is an alkyl group with 1 to 10 carbons in chain, branched, cyclic, or aromatic group; and n=1 to 3; and R n GeX′ 4-n , wherein X′ is F (fluorine), Cl (chlorine), or Br (bromine); R is hydrogen, or alkyl groups with 1 to 10 carbons in chain, branched, cyclic or aromatic groups; and n=0-3; and (c) contacting the substrate with a metal compound having a general formula of: M′X n wherein M′ is selected from the group consisting of Sb, In, Sn, Ga, Bi, Ag, Cu, Zr, Hf, Hg, Cd, and Zn; X is a neucleophilic group selected from the group consisting of OR (alkoxy), F (fluorine), Cl (chlorine), Br (bromine), CN (cyano), OCN (cyanate), SCN (thiocyanate), diketonate, carboxylic groups and mixtures thereof; and n=1 to 5.