Patent ID: 7547501
Filing Date: 2009-06-16
Classification: C07F,Y10S

Abstract:
1. A photoresist composition useful for imaging in deep UV comprising; a) a polymer containing an acid labile group; b) a compound selected from triphenylsulfonium 1-carba-closo-dodecarborane, bis(4-t-butylphenyl) iodonium 1-carba-closo-dodecarborane, bis(4-t-butylphenyl) iodonium 1-carba-2,3,5,7,9,10-hexachloro-closo-dodecarborane, bis(4-t-butylphenyl) iodonium 1-carba-2,3,5,7,9,10-hexabromo-closo-dodecarborane, (4-t-butylphenyl) iodonium 1-carba-1,2,3,4,5,6,7,8,9,10,11,12-dodecamethyl-closo-dodecarborane, bis(4-t-butylphenyl)iodonium 1-carba-1,2,3,4,5,6,7,8,9,10,11,12-dodecatrifluoromethyl-closo-dodecarborane; and c) two or more additional photoacid generators selected from bis(triphenyl sulfonium)perfluorobutane-1,4-disulfonate, bis(4-t-butylphenyl)iodonium perfluorobutane-1,4-disulfonate, bis(4-t-butylphenyl)iodonium bis-perfluoroethane sulfonimide, and mixtures thereof.