Sub-10-nm patterning via directed self-assembly of block copolymer films with a vapour-phase deposited topcoat
Abstract
Directed self-assembly (DSA) of the domain structure in block copolymer (BCP) thin films is a promising approach for sub-10-nm surface patterning. DSA requires the control of interfacial properties on both interfaces of a BCP film to induce the formation of domains that traverse the entire film with a perpendicular orientation. Here we show a methodology to control the interfacial properties of BCP films that uses a polymer topcoat deposited by initiated chemical vapour deposition (iCVD). The iCVD topcoat forms a crosslinked network that grafts to and immobilizes BCP chains to create an interface that is equally attractive to both blocks of the underlying copolymer. The topcoat, in conjunction with a chemically patterned substrate, directs the assembly of the grating structures in BCP films with a half-pitch dimension of 9.3 nm. As the iCVD topcoat can be as thin as 7 nm, it is amenable to pattern transfer without removal. As a result, the ease of vapour-phase deposition, applicability to high-resolution BCP systems and integration with pattern-transfer schemes are attractive properties of iCVD topcoats for industrial applications.
- Authors:
-
- Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division; National Science Foundation (NSF); U.S. Army Research Laboratory - U.S. Army Research Office (ARO)
- OSTI Identifier:
- 1373307
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Nanotechnology
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 6; Journal ID: ISSN 1748-3387
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Suh, Hyo Seon, Kim, Do Han, Moni, Priya, Xiong, Shisheng, Ocola, Leonidas E., Zaluzec, Nestor J., Gleason, Karen K., and Nealey, Paul F. Sub-10-nm patterning via directed self-assembly of block copolymer films with a vapour-phase deposited topcoat. United States: N. p., 2017.
Web. doi:10.1038/nnano.2017.34.
Suh, Hyo Seon, Kim, Do Han, Moni, Priya, Xiong, Shisheng, Ocola, Leonidas E., Zaluzec, Nestor J., Gleason, Karen K., & Nealey, Paul F. Sub-10-nm patterning via directed self-assembly of block copolymer films with a vapour-phase deposited topcoat. United States. https://doi.org/10.1038/nnano.2017.34
Suh, Hyo Seon, Kim, Do Han, Moni, Priya, Xiong, Shisheng, Ocola, Leonidas E., Zaluzec, Nestor J., Gleason, Karen K., and Nealey, Paul F. Mon .
"Sub-10-nm patterning via directed self-assembly of block copolymer films with a vapour-phase deposited topcoat". United States. https://doi.org/10.1038/nnano.2017.34. https://www.osti.gov/servlets/purl/1373307.
@article{osti_1373307,
title = {Sub-10-nm patterning via directed self-assembly of block copolymer films with a vapour-phase deposited topcoat},
author = {Suh, Hyo Seon and Kim, Do Han and Moni, Priya and Xiong, Shisheng and Ocola, Leonidas E. and Zaluzec, Nestor J. and Gleason, Karen K. and Nealey, Paul F.},
abstractNote = {Directed self-assembly (DSA) of the domain structure in block copolymer (BCP) thin films is a promising approach for sub-10-nm surface patterning. DSA requires the control of interfacial properties on both interfaces of a BCP film to induce the formation of domains that traverse the entire film with a perpendicular orientation. Here we show a methodology to control the interfacial properties of BCP films that uses a polymer topcoat deposited by initiated chemical vapour deposition (iCVD). The iCVD topcoat forms a crosslinked network that grafts to and immobilizes BCP chains to create an interface that is equally attractive to both blocks of the underlying copolymer. The topcoat, in conjunction with a chemically patterned substrate, directs the assembly of the grating structures in BCP films with a half-pitch dimension of 9.3 nm. As the iCVD topcoat can be as thin as 7 nm, it is amenable to pattern transfer without removal. As a result, the ease of vapour-phase deposition, applicability to high-resolution BCP systems and integration with pattern-transfer schemes are attractive properties of iCVD topcoats for industrial applications.},
doi = {10.1038/nnano.2017.34},
journal = {Nature Nanotechnology},
number = 6,
volume = 12,
place = {United States},
year = {Mon Mar 27 00:00:00 EDT 2017},
month = {Mon Mar 27 00:00:00 EDT 2017}
}
Web of Science
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