Patent ID: 7947130

Claim:
A method of cleaning semiconductor substrates comprising the steps of: a. providing a semiconductor substrate having a surface comprising copper-containing conductor and a low-k dielectric material and one or more of resist, etching residue, planarization residue, and copper oxide disposed on the surface thereof; b. contacting the surface of the semiconductor substrate with an effective amount of an aqueous cleaning solution comprising: an aqueous solution of at least one or more Troika acids, its derivatives, or its salts comprising the general formula: or tautomers thereof; wherein R 1 is hydrogen, hydrogen, alkyl, heteroalkyl, aryl, heteroaryl; R 2 and R 3 is selected independently from the group consisting of hydrogen, alkyl, heteroalkyl, aryl, heteroaryl, sodium, and alky or aryl ammonium; wherein the semiconductor substrate is exposed to the aqueous cleaning solution at a sufficient time and temperature to effectively remove said resist, said etching and planarization residues, and said copper oxide disposed on said surface of the semiconductor substrate created during a semiconductor manufacturing process.