Patent ID: 6200891
Filing Date: 2001-03-13
Classification: H01L

Abstract:
A method for removing exposed oxide from an article wherein said article contains at least one feature selected from the group consisting of (i) a metal or conductive metal-containing structure contacting said oxide, and (ii) a metal or conductive metal-containing structure having an exposed surface, which method comprises contacting said article with a liquid composition containing about 0.5 to about 15 molar of a fluoride-containing compound and an organic solvent wherein said organic solvent is selected from the group consisting of propylene carbonate, N-methyI pyrrolidone, gamma butyrolactone, methylene chloride benzyl alcohol, N-formyl morpholine, N-formyl piperidine, cyclohexanone, cyclopentanon, methyl benzoate, diglyme, 2-methyl tetrahydrofuran, methyl and ethyl esters of acid selected from the group consisting of phthalic acid, isophthalic acid and terephthalic acid, to thereby selectively remove at least a portion of said exposed oxide.