Patent ID: 7763577

Claim:
An acidic post-CMP cleaning composition consisting of: at least one polyamino-polycarboxylic acid, or salt thereof; at least one hydroxycarboxylic acid, or salt thereof; at least one surfactant, wherein the surfactant is selected from the group consisting of alkylsulfonic acid, alkylbenzenesulfonic acid, alkylsulfonic acid, sulfosuccinate, 2-aminoethanesulfonic acid, nonoxynol-4 sulfate and lauryl-sulfonate; one of tetramethylammonium hydroxide, ammonium hydroxide, tetrabutylammonium hydroxide, tetraethylammonium hydroxide, benzyltrimethylammonium hydroxide, dimethyldiethylammonium hydroxide, tetrapropylammonium hydroxide, and phosphazenes; and water, wherein the acidic cleaning composition has a pH of 1 to 5.