Patent ID: 8231733
Filing Date: 2012-07-31
Classification: B08B,C09D,C11D,C23G,G03F,H01L,Y10S

Abstract:
1. A method of removing etch and/or ash residue from a semiconductor substrate, comprising: contacting the semiconductor substrate for a period of time sufficient to remove the etch and/or ash residue with a composition consisting essentially of: a. from 45 wt % to 90 wt % of a water soluble organic solvent, b. from 3 wt % to 10 wt % of a salt of a sulfonic acid, wherein the sulfonic acid is selected from the group consisting of p-toluene sulfonic acid, 1,5-naphthalene disulfonic acid, 4-ethylbenzene sulfonic acid, and mixtures thereof; and c. from 5 wt % to 50 wt % water, wherein all of the ingredients contained in the composition are dissolved, and wherein the salt of a sulfonic acid is present in the composition in an effective amount to remove etch and/or ash residue from the semiconductor substrate.