SULFONIUM COMPOUND, PHOTOACID GENERATOR, AND RESIST COMPOSITION
申请人:OH Jung Hoon
公开号:US20130035503A1
公开(公告)日:2013-02-07
A sulfonium compound represented by the following formula (1), a photoacid generator containing the sulfonium compound, and a resist composition containing the photoacid generator are provided:
wherein X represents an electron donor group; R
1
and R
2
each independently represent an alkyl group or the like; R
4
to R
6
each independently represent an alkyl group, or the like; R
3
represents a cyclic alkenediyl group or the like; and −A represents an anion. The sulfonium compound has a photon yield that is controllable by introducing different absorbers to the cation region in one molecule, can address the inconvenience of using a mixture of different photoacid generators when the sulfonium compound is applied as a photoacid generator, has excellent miscibility in a resist, and has enhanced resolution and line edge roughness.