Polymeric barrier removal polishing slurry

The aqueous slurry is useful for chemical mechanical polishing semiconductor substrates having copper interconnects. The aqueous slurry includes by weight percent, 0.01 to 25 oxidizing agent, 0.1 to 50 abrasive particles, 0.001 to 3 polyvinyl pyrrolidone, 0.01 to 10 inhibitor for decreasing static e...

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Bibliographic Details
Main Authors Thomas, Terence M, Ye, Qianqiu
Format Patent
LanguageEnglish
Published 31.08.2010
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Summary:The aqueous slurry is useful for chemical mechanical polishing semiconductor substrates having copper interconnects. The aqueous slurry includes by weight percent, 0.01 to 25 oxidizing agent, 0.1 to 50 abrasive particles, 0.001 to 3 polyvinyl pyrrolidone, 0.01 to 10 inhibitor for decreasing static etch of the copper interconnects, 0.001 to 5 phosphorus-containing compound for increasing removal rate of the copper interconnects, 0.001 to 10 complexing agent formed during polishing and balance water; and the aqueous slurry has a pH of at least 8.