Patent ID: 7553803

Claim:
A supercritical fluid (SCF) based composition comprising at least one co-solvent, at least one etchant species, at least one surface passivator, a binder interactive with silicon-containing particulate material to enhance removal thereof, water, and optionally at least one surfactant, wherein said binder is derived from at least one ethylenically unsaturated reactant, wherein said etchant species is selected from the group consisting of hydrofluoric acid, ammonium fluoride, triethylamine trihydrofluoride, ammonium bifluoride, tetraalkylammonium bifluorides having the formula (R) 4 NHF 2 and alkyl phosphonium bifluorides having the formula (R) 4 PHF 2 , wherein R is selected from the group consisting of methyl, ethyl, butyl, phenyl and fluorinated C 1 -C 4 alkyl groups, wherein said composition is useful for removing silicon-containing particulate material from the surface of a semiconductor wafer, and wherein the surface passivator is selected from the group consisting of boric acid and triethyl borate.