Patent ID: 6875661

Claim:
A first method of depositing a film of a metal chalcogenide, comprising the steps of: contacting: at least one metal chalcogenide; a hydrazine compound represented by the formula: R 1 R 2 N—NR 3 R 4 wherein each of R 1 , R2, R 3 and R 4 is independently selected from the group consisting of: hydrogen, aryl, methyl, ethyl and a linear, branched or cyclic alkyl of 3-6 carbon atoms; and optionally, an elemental chalcogen selected from the group consisting of: S, Se, Te and a combination thereof; to produce a solution of a hydrazinium-based precursor of said metal chalcogenide; applying said solution of said hydrazinium-based precursor of said metal chalcogenide onto a substrate to produce a film of said precursor; and thereafter annealing said film of said precursor to remove excess hydrazine and hydrazinium chalcogenide salts to produce a metal chalcogenide film on said substrate.