Patent ID: 7799514
Filing Date: 2010-09-21
Classification: G03F

Abstract:
1. A method for reducing formation of T-tops in a resist during a lithography process, comprising: forming an antireflective coating over a semiconductor substrate; forming a resist over a surface of the antireflective coated semiconductor substrate, wherein the resist is one selected from a positive resist and a negative resist; irradiating the resist; contacting the surface of the irradiated resist on the antireflective coated semiconductor substrate with an acidic composition with the proviso that the acidic composition does not comprise a peroxide compound, wherein the acidic composition neutralizes basic compounds; heating the resist; and developing the resist, wherein if the resist is a positive resist, developing the resist comprises removing irradiated portions of the resist, and wherein if the resist is a negative resist, developing the resist comprises removing unirradiated portions of the resist.