Polishing composition

A polishing composition to remove metal from a dielectric layer by, either single step CMP polishing, or two step CMP polishing, the composition including, an aqueous solution provided with a substance having molecules with respective silanols, and a concentration of ions that solublize the silanols...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Thomas, Terence, Lack, Craig, Ye, Qianqiu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A polishing composition to remove metal from a dielectric layer by, either single step CMP polishing, or two step CMP polishing, the composition including, an aqueous solution provided with a substance having molecules with respective silanols, and a concentration of ions that solublize the silanols to adsorb on a hydrated surface of the dielectric layer during said polishing.