Patent ID: 7375066

Claim:
An article of manufacture comprising a cleaning agent in contact with a surface of a semiconductor on which copper wiring is provided, the cleaning agent comprising at least one member selected from the group consisting of a compound shown by the following general formulas [1′], quinaldic acid, aromatic diamines selected from the group consisting of diaminobenzene and diaminonaphthalene, ureas selected from the group consisting of urea and uric acid, thioureas selected from group consisting of thiourea and thiosemicarbazide, and a compound shown by the following general formulas [3], [4] or [5]: [wherein, R 1 ′ and R 2 ′ are an alkyl group and R 3 ′ is a hydrogen atom or an alkyl group]; (wherein, each of R 8 -R 12 is independently a hydrogen atom or an alkyl group that may have a hydroxyl group or a phosphonic acid group; each of Y 2 and Y 3 is independently an alkylene group; and n is an integer of 1 or more); R 13 X═NR 15 [4] (wherein, X is ═CR 14 or a nitrogen atom; and each of R 13 -R 15 is independently a hydrogen atom, a hydrocarbon group that may have a hydroxyl group or a carboxyl group, or a monovalent group derived from a heterocycle having a nitrogen atom as a ring member atom); R 16 -R 17 [5] (wherein, each of R 16 and R 17 is independently a monovalent group derived from a heterocycle having a nitrogen atom as a ring member atom), wherein said at least one member being provided in an amount in contact with a surface of a semiconductor on which copper wiring is provided so as to remove CuO on said surface.