Patent ID: 8759268
Filing Date: 2014-06-24
Classification: C11D,G03F,H01L

Abstract:
1. A residue-removing solution for removing residues present on semiconductor substrates after dry etching and/or ashing, the solution having a pH of from 2 to 7 and comprising water and at least one component selected from the group consisting of a salt formed from at least one acid selected from the group consisting of levulinic acid and 5-aminolevulinic acid, and at least one base selected from the group consisting of ammonia, hydroxylamine, methylamine, ethylamine, propylamine, butylamine, dimethylamine, diethylamine, trimethylamine, triethylamine, propanediamine, quaternary ammonium, and polyamines, wherein the proportion of water in the residue-removing solution is from 81.8 to 99.5% by weight.