6 May 2005 Line width variation with absorber thickness in extreme ultraviolet lithography
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Selectivity of extreme ultra-violet lithography mask's material and thickness significantly influences on pattern formation. Since the reflectance changes periodically depending on absorber thickness, we investigated the absorber thickness effect on to near field and aerial image for 32 nm line/space and isolated pattern. We chose germanium and chromium as absorber materials. We also investigated the line width variation by absorber thickness change with different duty ratios. SOLID-EUV of sigma-C was used for this study.
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Young-Doo Jeon, Young-Doo Jeon, Min-Ki Choi, Min-Ki Choi, Eun-Jin Kim, Eun-Jin Kim, Jong-Sun Kim, Jong-Sun Kim, Hye-Keun Oh, Hye-Keun Oh, } "Line width variation with absorber thickness in extreme ultraviolet lithography", Proc. SPIE 5751, Emerging Lithographic Technologies IX, (6 May 2005); doi: 10.1117/12.600406; https://doi.org/10.1117/12.600406

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