Patent ID: 7252718
Filing Date: 2007-08-07
Classification: C03C,C11D,H01L

Abstract:
1. A process for cleaning residue from an aluminum-containing substrate, which comprises: contacting the aluminum-containing substrate with a first composition which removes residue from the substrate and which forms a passivating layer on the substrate, wherein the first composition comprises between about 50% and about 85% water, between about 15% to about 50% organic solvent, and between about 0.01% and about 5% of one or more fluoride compounds, by weight; and contacting the aluminum-containing substrate with a second composition which removes remaining residue from the substrate, wherein the second composition comprises between about 10% and about 50% water, between about 50% and about 85% organic solvent; and between about 0.01% and about 5% of one or more fluoride compounds, by weight, wherein the first composition and the second composition are not the same.