Patent ID: 7527912
Filing Date: 2009-05-05
Classification: C07C,C07D,G03F,Y10S

Abstract:
1. A photoacid generator for chemically amplified resist compositions which generates a sulfonic acid upon exposure to high-energy radiation selected from UV, deep-UV, EUV, electron beam, x-ray, excimer laser, gamma-ray and synchrotron radiation, said sulfonic acid having the general formula (1a): wherein R is selected from the group consisting of a hydroxyl group, a substituted or unsubstituted straight, branched or cyclic C 1 -C 20 alkyl group, a substituted or unsubstituted C 6 -C 15 aryl or C 4 -C 15 hetero-aryl group, a substituted or unsubstituted straight, branched or cyclic C 1 -C 20 alkoxy group, and a substituted or unsubstituted C 6 -C 15 aryloxy or C 4 -C 15 hetero-aryloxy group, R