Patent ID: 6110881
Filing Date: 2000-08-29
Classification: B24B,C09D,C11D,C23G,G03F,H01L

Abstract:
An etching residue remover, comprising(a) from about 5 to about 50% by weight of at least one nucleophilic amine compound having oxidation and reduction potentials selected from the group consisting ofcompounds of formula I and salts thereof, ##STR8## wherein R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen; a hydroxyl group; a substituted C.sub.1 -C.sub.6 straight, branched or cyclo alkyl, alkenyl, or alkynyl group, a substituted acyl group, straight or branched alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group, or salts or derivatives thereof, wherein at least one of R.sub.1, R.sub.2, and R.sub.3 is selected from the group consisting of a hydroxyl group; substituted C.sub.1 -C.sub.6 straight, branched, and cyclo alkyl, alkenyl, and alkynyl groups, substituted acyl groups, straight and branched alkoxy groups, amidyl groups, carboxyl groups, alkoxyalkyl groups, alkylamino groups, alkylsulfonyl groups, sulfonic acid groups, and salts and derivatives thereof; andcompounds of formula II and salts thereof, ##STR9## wherein R.sub.7, R.sub.8, R.sub.9, and R.sub.10 are independently hydrogen; a hydroxyl group; a substituted C.sub.1 -C.sub.6 straight, branched or cyclo alkyl, alkenyl, or alkynyl group; a substituted acyl group, straight or branched alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group, wherein at least one of R.sub.7, R.sub.8, R.sub.9, and R.sub.10 is selected from the group consisting of a hydroxyl group; substituted C.sub.1 -C.sub.6 straight, branched, and cyclo alkyl, alkenyl, and alkynyl group; substituted acyl groups, straight and branched alkoxy groups, amidyl groups, carboxyl groups, alkoxyalkyl groups, alkylamino groups, alkylsulfonyl groups, sulfonic acid groups, and salts and derivatives thereof;(b) from about 10 to about 80% by weight of at least one alkanolamine which is miscible with the at least one nucleophilic amine compound, and has the formula R.sub.22 R.sub.23 --N--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 OH, wherein R.sub.22, and R.sub.23 can be H, CH.sub.3, CH.sub.3 CH.sub.2, or CH.sub.2 CH.sub.2 OH;(c) an effective amount of up to about 30% by weight of at least one compound selected from the group consisting of a compound of formula III, ##STR10## wherein n=1-4, m=2-5 and R is independently hydrogen, a substituted C.sub.1 -C.sub.6 straight, branched or cyclic alkyl, alkenyl, or alkynyl group, a substituted acyl group, straight or branched chain alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group,a compound of formula IV, ##STR11## where R.sub.17 is OH or COOH, an ethylene diamine tetracarboxylic acid of formula V, ##STR12## where R.sub.18, R.sub.19, R.sub.20 and R.sub.21 can be either H or NH.sub.4, and an ammonium salt thereof, andan alkyl ammonium hydroxide of formula VI,R.sub.11 R.sub.12 R.sub.13 R.sub.14 NOHwherein R.sub.11, R.sub.12, R.sub.13 and R.sub.14 are each, independently, a short chain alkyl group having from 1 to 5 carbon atoms;wherein said compound is effective to assist in cleaning by retaining etching residue in the cleaning solution and thereby avoiding resettling of the residue onto a substrate and serves as a stabilizing agent to provide long term effectiveness to the composition; and(d) a balance of water, wherein the at least one nucleophilic amine compound, the at least one alkanolamine and the at least one compound are present in sufficient amounts to remove etching residue from a substrate.