High resolution silicon-containing resist

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device

Reexamination Certificate

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C430S270100

Reexamination Certificate

active

07659050

ABSTRACT:
Non-chemically amplified radiation sensitive resist compositions containing silicon are especially useful for lithographic applications, especially E-beam lithography. More particularly, radiation-sensitive resist compositions comprising a polymer having at least one silicon-containing moiety and at least one radiation-sensitive moiety cleavable upon radiation exposure to form aqueous base soluble moiety can be used to pattern sub-50 nm features with little or no blur.

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“Sub-50 nm Half Pitch Imaging with a Low Activation Energy Chemically Amplified Photoresist”, G.M. Wallraf, C.E. Larson, M. Sanchez, C. Rettner, B. Davis, L. Sundberg, W.D. Hinsberg, F.A. Houle, J. A. Hoffnagle, D.R. Medeiros, W-S Huang, K. Petrillo, D. Goldfarb, K. Temple, S. Wind, J. Bucchignano.
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