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Proceedings Paper

Hemicellulose block copolymers made from woods for wide-range directed self-assembly lithography enabling wider range of applicable patterning size
Author(s): Kazuyo Morita; Kimiko Yamamoto
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Paper Abstract

Xylan, one of hemicellulose family, block copolymer was newly developed for wide-range directed self-assembly lithography (DSA). Xylan is higher hydrophilic material because of having many hydroxy groups in one molecule. It means that xylan block copolymer has a possibility of high-chi block copolymer. Generally, DSA is focused on microphase separation for smaller size with high-chi block copolymer and not well known for larger size. In this study, xylan block copolymer was confirmed enabling wider range of patterning size, from smaller size to larger size. The key of xylan block copolymer is a new molecular structure of block copolymer and sugar chain control technology. Sugar content is the important parameter for not only micro-phase separation property but also line edge roughness (LER) and defects. Based on the sugar control technology, wide-range (hp 8.3nm to 26nm L/S and CD 10nm to 51nm hole) DSA patterning was demonstrated. Additionally it was confirmed that xylan block copolymer is suitable for sequential infiltration synthesis (SIS) process.

Paper Details

Date Published: 27 March 2017
PDF: 6 pages
Proc. SPIE 10146, Advances in Patterning Materials and Processes XXXIV, 101460Y (27 March 2017); doi: 10.1117/12.2257625
Show Author Affiliations
Kazuyo Morita, Oji Holdings Corp. (Japan)
Kimiko Yamamoto, Oji Holdings Corp. (Japan)

Published in SPIE Proceedings Vol. 10146:
Advances in Patterning Materials and Processes XXXIV
Christoph K. Hohle, Editor(s)

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