Patent ID: 7442675

Claim:
A cleaning composition for cleaning a semiconductor substrate comprising a low-dielectric layer, a photoresist film, a buried material and a residue of metal, said cleaning composition comprising: quaternary ammonium hydroxide; a water-soluble organic solvent of from 2 to 85 mass percent of the total amount of the cleaning composition; water; an anticorrosive; and potassium hydroxide of from 0.001 to 0.1 mass percent of a total amount of the cleaning composition, wherein the water-soluble organic solvent comprises an alkanolamine-based water-soluble organic solvent and any other water-soluble organic solvent, the amount of the alkanolamine-based water-soluble organic solvent is in the range of from 15 to 50 mass percent of the total amount of the cleaning composition and the remaining water-soluble organic solvent is the any other water-soluble organic solvent, and said cleaning composition removes at least one of photoresist film, buried material and residue of metal from said semiconductor substrate, without degrading the low-dielectric layer.