Patent ID: 7540935
Filing Date: 2009-06-02
Classification: H01L

Abstract:
1. A system for etching a conductive layer comprising: a plasma chamber, the plasma chamber capable of enclosing a substrate, the substrate having an exposed layer of conductive material, the plasma chamber capable of supporting a first plasma having a temperature of greater than about 200 degrees C. and a second plasma having a temperature of less than about 100 degrees C.; a converting species source coupled to the plasma chamber; an etching species source coupled to the plasma chamber; and a controller coupled to the plasma chamber, the controller including computer readable code on a computer readable medium to control a flow of the converting species and the etching species into the plasma chamber, the controller including a recipe including computer readable code on a computer readable medium for converting at least a portion of the conductive layer and computer readable code on a computer readable medium for nitriding the at least a portion of the conductive layer.