New positive photoresist compositions are provided that contain a photoactive component and blend of at least two distinct resins: i) a first resin that comprises carbocyclic aryl units with hetero substitution (particularly hydroxy or thio) and ii) a second cross-linked resin. Preferred photoresists of the invention can be imaged at short wavelengths, such as sub-200 nm, particularly 193 nm.
                            提供了新的正向光阻组合物,其中包含一个光活性成分和至少两种不同
树脂的混合物:i)第一种
树脂包含带有杂原子取代的碳环芳基单元(特别是羟基或
硫代基),以及ii)第二种交联
树脂。本发明的首选光阻可以在短波长下成像,例如亚200纳米,特别是193纳米。