Patent ID: 6197388
Filing Date: 2001-03-06
Classification: H01L

Abstract:
A method of processing a substrate having an aluminum neodymium-containing layer, an etch surface of said aluminum neodymium-containing layer having residual chlorine proximate to said etch surface of said aluminum neodymium-containing layer, comprising:providing a first gas chemistry including HBr and SF.sub.6, said SF.sub.6 supplying a first plurality of fluorine ions;forming a first plasma from said first gas chemistry;passivating said etch surface of said aluminum neodymium-containing layer with said first plasma, said passivation causing a second plurality of said fluorine ions to replace a first portion of said residual chlorine, said second plurality of said fluorine ions being a subset of said first plurality of said fluorine ions;providing a second gas chemistry having hydrofluorocarbon and oxygen, said hydrofluorocarbon providing a third plurality of fluorine ions;forming a second plasma with said second gas chemistry;bombarding said etch surface of said aluminum neodymium-containing layer with said second plasma, said bombarding causing a fourth plurality of said fluorine ions to replace a second portion of said residual chlorine, said fourth plurality of said fluorine ions being a subset of said third plurality of said fluorine ions; andproviding a third gas chemistry having hydrofluorocarbon, forming a third plasma with said third gas chemistry;depositing a polymer material using said third plasma to coat said etch surface of said aluminum neodymium-containing layer.