Patent ID: 7399365

Claim:
A method of cleaning a semiconductor substrate comprising providing a semiconductor substrate comprising a low-K substrate with un-ashed resist or incompletely ashed resist residue thereon; providing a dilute aqueous cleaner and residue remover comprising: from 0.02% to 0.18% by weight of a fluoride-containing compound selected from the group consisting of ammonium fluoride, alkylammonium fluorides, ethanolamine fluoride, ammonium biflouride, alkylammonium bifluorides, or a mixture thereof; from 20% to about 40% by weight water; from 59% to 85% by weight total of an amide and an ether solvent, from 0.2% to 5% by weight of an inorganic acid selected from sulfamic acid, phosphonic acid, or mixture thereof; and from 0.2% to 5% by weight of an alkanolamine; wherein said cleaner and residue remover is free of chelators; and contacting the semiconductor substrate with the aqueous cleaner and residue remover for a period and under a temperature sufficient to clean the substrate of said resist and/or incompletely ashed resist residue.