Patent ID: 8524851

Claim:
A silicon-based hardmask composition, comprising: an organosilane polymer represented by Formula 1: {(SiO 1.5 —Y—SiO 1.5 ) x (R 3 SiO 1.5 ) y (XSiO 1.5 ) z }(OH) e (OR 6 ) f (1), wherein: x, y, and z satisfy the relations 0.05≦x≦0.9, 0.05≦y≦0.9, 0≦z≦0.9, and x+y+z=1, e and f represent the ratios of the numbers of terminal —OH groups and —OR 6 groups bonded to the silicon atoms to the number of 2x+y+z silicon atoms in the organosilane polymer, respectively, and satisfy the relations 0.03≦e≦0.2 and 0.03≦f≦0.25, X is a C 6 -C 30 group containing at least one substituted or unsubstituted aromatic ring, R 3 is a C 1 -C 12 alkyl group, Y is a linking group selected from the group of an aromatic ring, a substituted or unsubstituted linear or branched C 1 -C 20 alkylene group, a C 1 -C 20 alkylene group containing at least one aromatic or heterocyclic ring or having at least one urea or isocyanurate group in the backbone, and a C 2 -C 20 hydrocarbon group containing at least one multiple bond, and R 6 is a C 1 -C 6 alkyl group.