Patent ID: 7713885
Filing Date: 2010-05-11
Classification: C11D,H01L,Y10S

Abstract:
1. A method comprising: providing a cleaning solution incorporating trichloroacetic acid and at least one carboxylic acid in addition to the trichloroacetic acid, the at least one carboxylic acid having an aqueous acidic dissociation constant of at least 1×10 providing a silicon-dioxide-containing surface having silicon-dioxide-containing debris thereon; removing at least some of the silicon-dioxide-containing debris from the silicon-dioxide-containing surface using the cleaning solution; and reducing an amount of roughness induced on the silicon-dioxide-containing surface during the removal of the silicon-dioxide-containing debris compared to another amount of roughness that would have been induced using a same cleaning solution except lacking the trichloroacetic acid and the at least one additional carboxylic acid.