Patent ID: 8574810
Filing Date: 2013-11-05
Classification: G03F

Abstract:
1. A method of patterning a substrate, comprising: forming a layer of radiation-sensitive material on a substrate, said layer of radiation-sensitive material comprises two or more photo-activated acid enhancement components; and exposing said layer of radiation-sensitive material to electromagnetic (EM) radiation using a lithography exposure system including a radiation source for said EM radiation and an imaging system for projecting said EM radiation from said radiation source to said substrate, said EM radiation containing a first wavelength or first range of wavelengths, and a second wavelength or second range of wavelengths different from said first wavelength or first range of wavelengths, wherein one of said two or more photo-activated acid enhancement components is selected to augment an acid concentration in said layer of radiation-sensitive material when exposed to said EM radiation at said first wavelength or first range of wavelengths, and wherein another of said two or more photo-activated acid enhancement components is selected to augment said acid concentration in said layer of radiation-sensitive material when exposed to EM radiation at said second wavelength or second range of wavelengths.