Patent ID: 7122484

Claim:
A fully wet method of removing an organic layer or organic residue from a substrate, comprising: (a) providing a substrate with a low k dielectric layer having an organic layer or organic residue formed thereon; and (b) contacting the low k dielectric layer on said substrate with a liquid solution that includes ozone and water, said ozone and said water together constituting at least 95% by volume of the total volume of said liquid solution; wherein the liquid solution further includes one or more additives that are each selected from a group consisting of NH 4 OH, hydroxylamine, NH 4 F, NH 4 Cl, NH 4 Br, and NH 4 I; and wherein the liquid solution further includes one or more additives that are each selected from a group consisting at H 2 SO 4 , HCl, and HF.