Patent ID: 6566266
Filing Date: 2003-05-20
Classification: H01L

Abstract:
A process for polishing a semiconductor body, comprising the steps of:providing a semiconductor body; forming a barrier layer over at least a portion of said semiconductor body; forming a copper seed layer over said barrier layer; forming a pattern layer over at least a portion of said copper seed layer; forming a copper layer over at least a portion of said copper seed layer, removing said pattern layer after said formation of said copper layer over at least a portion of said copper seed layer; polishing at least a portion of said copper layer with a first polishing slurry composition; changing said slurry polishing composition from said first slurry composition to a second polishing slurry composition; polishing at least a portion of said at least one layer comprising copper with said second slurry composition; and polishing at least a portion of said barrier layer with said second slurry composition, wherein said second slurry composition comprises an effective amount of a copper oxide inhibitor to substantially inhibit copper oxide formation.