申请人:Allied Corporation
公开号:US04735885A1
公开(公告)日:1988-04-05
Disclosed are substituted derivatives of 5-diazobarbituric acid selected from those having the formulas: ##STR1## wherein R.sub.1 and R.sub.2 are substituents selected from the group consisting of C.sub.3 to C.sub.12 alkyl, cyclohexyl, benzyl and C.sub.2 to C.sub.6 aralkyl groups, wherein R.sub.3 and R.sub.4 are substituents selected from the group consisting of C.sub.1 to C.sub.12 alkyl, cyclohexyl, benzyl or other C.sub.2 to C.sub.6 aralkyl groups and R.sub.5 is selected from the group consisting of .alpha.,.omega.-disubstituted C.sub.2 to C.sub.12 alkyl, methylene dicyclohexyl, or C.sub.1 to C.sub.6 dialkylphenylene. These compounds provide DUV response with an absorption maximum near 260 nm. The substituents are chosen to be nonabsorbing alkyl groups that allow efficient photobleaching of the sensitizer during exposure. The sensitizers of the present invention are designed to function in the DUV region and are useful in the manufacture of semi-conductor devices.
本发明涉及5-二氮杂巴比妥酸的取代衍生物,所选的衍生物具有以下公式:其中R1和R2是从C3到C12烷基,环己基,苄基和C2到C6芳基烷基组成的取代基,其中R3和R4是从C1到C12烷基,环己基,苄基或其他C2到C6芳基烷基组成的取代基,R5选自α,ω-二取代的C2到C12烷基,亚甲基二环己基或C1到C6二烷基苯基组成的取代基。这些化合物在吸收最大值接近260nm的DUV响应中提供。所选的取代基是非吸收烷基,可以在曝光期间有效光漂白敏化剂。本发明的敏化剂设计用于DUV区域,并且在半导体器件的制造中有用。