Patent ID: 7232768

Claim:
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 is reactive with oxygen plasma; forming a photoreist 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, wherein the step of forming at least one void further forms 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 by subjecting the semiconductor wafer to a dry plasma having a mixture of at approximately 80% NH 3 , approximately 2-7% O 2 , approximately 10-15% N 2 , and approximately 2-6% CF 4 .