Patent ID: 6967173
Filing Date: 2005-11-22
Classification: G03F,H01L

Abstract:
1. A method of fabricating an electronic device formed on a semiconductor wafer, comprising the steps of: forming a layer of a first material in a fixed position relative to the wafer, wherein the first material has a dielectric constant less than 3.6; forming a photoresist layer in a fixed position relative to the layer of the first material; forming at least one void through the layer of the first material in response to the photoresist layer, thereby forming a polymeric residue in response to the photoresist layer; subjecting the semiconductor wafer to a plasma which incorporates a gas which includes hydrogen so as to remove the photoresist layer; and removing the polymeric residue, the step of removing the polymeric residue comprises subjecting the semiconductor wafer to a wet etch chemistry and also subjecting the semiconductor wafer to a plasma annealing step.