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Proceedings Paper

Molecular resists based on calix[4]resorcinarene derivatives for EB lithography
Author(s): Kenichi Okuyama
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Paper Abstract

Molecular resists are excellent candidates for next-generation lithography because of their resolution and line edge roughness properties. Calixarenes and their derivatives have been evaluated by several research groups as resist materials. However, resists based on calixarene derivatives have issue, such as low adhesiveness to substrates and high solubility, in a standard 0.26 N alkaline developer. In this study, a series of calix[4]resorcinarene (CRA) derivatives were synthesized and evaluated as negative-tone chemical amplified resists for EB lithography. Typical resist components include the CRA, a photo acid generator, a cross linker, a quencher and solvent. Dissolution rates of CRA derivatives for an alkaline developer have been optimized. As a result, the best of the resists exhibited a resolution of under 20 nm halfpitch with reasonable sensitivity under 100 kV electron beam exposures. Furthermore, the resists based on CRA derivatives showed improvements in adhesiveness to substrate and sissolution properties.

Paper Details

Date Published: 1 April 2009
PDF: 7 pages
Proc. SPIE 7273, Advances in Resist Materials and Processing Technology XXVI, 72732U (1 April 2009); doi: 10.1117/12.813632
Show Author Affiliations
Kenichi Okuyama, Dai Nippon Printing Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 7273:
Advances in Resist Materials and Processing Technology XXVI
Clifford L. Henderson, Editor(s)

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