Performance data on new tunable attenuating PSM for 193nm and 157nm lithographyHans BeckerFrank Schmidtet al.2004Photomask and Next-Generation Lithography Mask Technology 2004
Development of a new PSM film system for 157 nm extensible to high transmission 193 nm lithographyHans BeckerJay Cheyet al.2003SPIE Photomask Technology 2003