Patent ID: 7387130
Filing Date: 2008-06-17
Classification: C11D,C23G,G03F

Abstract:
1. A method for replenishing a resist and etching residue removal composition comprising adding a chelating agent to said composition after said composition has been used to remove resist and etching residue from a semiconductor substrate, wherein said composition comprises: hydroxylamine or a derivative thereof having a general formula of: wherein R 1 , R 2 , and R 3 are independently hydrogen; a C 1 -C 6 straight, branched or cyclo alkyl, alkenyl, or alkynyl group; an acyl group; a straight or branched alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group; or a salt thereof, at least one organic solvent and water.