Patent ID: 7208197

Claim:
A process for the deposition of a copper film on a support, comprising bringing a copper precursor, in the vapor phase, into contact with a heated support, optionally in the presence of hydrogen, wherein the copper precursor is in the form of a composition of a copper salt in a liquid organic solvent, in which: the copper salt is chosen from copper(I) chloride and copper(I) bromide, the liquid organic solvent is a nonaromatic, nonplanar and heteroatom-free compound which exhibits at least two nonconjugated unsaturations and which is chosen from: a) noncyclic compounds optionally carrying at least one alkyl group on at least one of the carbon atoms of an unsaturated group; b) cyclic compounds comprising two unsaturations on the ring, said ring carrying at least one alkyl substituent; c) cyclic compounds in which one unsaturation forms part of the ring and one unsaturation is placed on a substituent of the ring; d) cyclic compounds in which two unsaturations are placed on the same substituent of the ring or two different substituents.