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Chemically Amplified Resist for Extreme UV Lithography  

Choi, Jaehak (Radiation Application Division, Korea Atomic Energy Research Institute)
Nho, Young Chang (Radiation Application Division, Korea Atomic Energy Research Institute)
Hong, Seong Kwon (Department of Polymer Science and Engineering, Chungnam National University)
Publication Information
Applied Chemistry for Engineering / v.17, no.2, 2006 , pp. 158-162 More about this Journal
Abstract
Poly[4-hydroxystyrene-co-2-(4-methoxybutyl)-2-adamantyl methacrylate] was synthesized and evaluated as a matrix resin for extreme UV (EUV) chemically amplified resist. The resist system formulated with this polymer resolved 120 nm line and space (pitch 240 nm) positive patterns using a KrF excimer laser scanner (0.60 NA). The well defined 50 nm line positive patterns (pitch 180 nm) were obtained using an EUV lithography tool. The dry etching resistance of this resist for a $CF_{4}$-based plasma was 1.1 times better than that of poly(4-hydroxystyrene).
Keywords
extreme UV lithography; chemically amplified resist; adamantly methacrylate;
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