Patent ID: 7947638

Claim:
A sulfur-containing detergent composition for cleaning a semiconductor device having an aluminum wire, wherein said sulfur-containing detergent composition is capable of forming a protective film containing a sulfur atom on a surface of an aluminum film in a protective film-forming test; the sulfur-containing detergent composition has a pH of from 1 to 5; and the sulfur-containing detergent composition comprises: (i) 0.1 to 10% by weight of an acid which is at least one or more selected from the group consisting of oxalic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, sulfuric acid, nitric acid, and phosphonic acid; (ii) 1 to 20% by weight of a salt of an organic acid, a salt of an inorganic acid, or a mixture thereof, wherein said salt is at least one or more selected from the group consisting of ammonium oxalate, ammonium sulfate, and ammonium nitrate; and (iii) water in an amount of at least 50% by weight of the detergent composition.