Patent ID: 7943516

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: forming a nickel silicide layer on a substrate; forming an interlayer insulating film on said nickel silicide layer; forming a through hole by performing dry etching using a resist pattern, formed on said interlayer insulating film, as a mask and then removing said resist pattern by ashing; and removing a residue remaining after said dry etching and said ashing by cleaning said substrate with a cleaning solution containing a fluorine-containing compound, chelating agent and an organic acid salt, wherein the cleaning solution is an aqueous solution that consists of: 1.0 to 5.0 mass % of a fluorine-containing compound; 0.2 to 5.0 mass % of a chelating agent; 0.1 to 3.0 mass % of an organic acid salt; and water, wherein said fluorine-containing compound is at least one compound selected from a group consisting of hydrofluoric acid, ammonium fluoride, and amine fluoride, wherein said chelating agent is selected from a group consisting of chelating agents having an acid dissociation constant pKan of 8.0 or greater at 25° C. when a dissociation stage for a basic acid having a valence of n (n being an integer of 1 or greater) is n-th stage, and wherein said organic acid salt is selected from carboxylic ammonium salt having an acid dissociation constant pKan of 2.5 or greater at 25° C. when a dissociation stage for a basic acid having a valence of n (n being an integer of 1 or greater) is n-th stage.