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Proceedings Paper

Base additives for use in a single layer 193-nm resist based upon poly(norbornene/maleic anhydride/acrylic acid/tert-butyl acrylate)
Author(s): Francis M. Houlihan; Donna Person; Omkaram Nalamasu; Ilya Rushkin; Ognian N. Dimov; Elsa Reichmanis
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Paper Abstract

We report on a study of the chemical and lithographic behavior of two types of base additives. One class of materials that we will report on are aminosulfonate onium salts, we report a study of both the thermal stability and the lithographic behavior imparted by these as a function of chemical structure. It will be shown that the decomposition temperature is a function of the basicity (nucleophilicity) of the counter anion but this can be countered by appropriate choice on onium cation. We will also discuss the lithographic performance of formulations containing transparent ammonium carboxylate bases. It will be shown that these materials provide for comparable lithographic to a standard formulation containing an amine additive. Since carboxylates and aminosulfonates are far less nucleophilic than amine additives these additives may be useful because they will not have the tendency to interact with electrophilic sites such as maleic anhydride derived repeat units.

Paper Details

Date Published: 24 August 2001
PDF: 11 pages
Proc. SPIE 4345, Advances in Resist Technology and Processing XVIII, (24 August 2001); doi: 10.1117/12.436912
Show Author Affiliations
Francis M. Houlihan, Agere Systems (United States)
Donna Person, Lucent Technologies/Bell Labs. (United States)
Omkaram Nalamasu, Agere Systems (United States)
Ilya Rushkin, Arch Chemicals, Inc. (United States)
Ognian N. Dimov, Arch Chemicals, Inc. (United States)
Elsa Reichmanis, Arch Chemicals, Inc. (United States)

Published in SPIE Proceedings Vol. 4345:
Advances in Resist Technology and Processing XVIII
Francis M. Houlihan, Editor(s)

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