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Proceedings Paper

Enabling large area and high throughput roll-to-roll NIL by novel inkjetable and photo-curable NIL resists
Author(s): Manuel W. Thesen; Maximilian Rumler; Florian Schlachter; Susanne Grützner; Christian Moormann; Mathias Rommel; Dieter Nees; Stephan Ruttloff; Stefan Pfirrmann; Marko Vogler; Arne Schleunitz; Gabi Grützner
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Paper Abstract

The high throughput and large area nanostructuring of flexible substrates by continuous roller processes has great potential for future custom applications like wire grid polarizers, antireflection films, or super-hydrophobic surfaces. For each application different material characteristics have to be considered, e.g. refractive index, hydrophobicity, or dry etch stability. Herein, we show experimental results of nanoimprint lithography resist developments focused on inkjetable and photo-curable resists suitable for high throughput production, especially roll-to-roll NIL. The inkjet deposition of the novel materials is demonstrated by the use of different state-of-the-art inkjet printheads at room temperature. A plate-to-plate process on silicon substrates was successfully implemented on a NPS300 nano patterning stepper with previously inkjet dispensed NIL resist. Furthermore, we demonstrate a throughput of 30 m min-1 in a roller NIL process on PET. Dry etching of unstructured thin films on Si wafers was performed, and it was demonstrated that the etch stability in Si is tunable to a value of 3.5:1 by a concise selection of the resist components. The surface roughness of the etched films was measured to be < 2 nm, after etching of around 100 nm of the resist films what is an essential factor for a low line edge roughness. All resists reported herein can be deposited via inkjet dispensing at room temperature, are suitable for continuous high throughput imprinting on flexible substrates, and are applicable in step-wise NIL processes with good etch resistance in dry etch processes.

Paper Details

Date Published: 28 March 2014
PDF: 8 pages
Proc. SPIE 9049, Alternative Lithographic Technologies VI, 90490H (28 March 2014); doi: 10.1117/12.2046279
Show Author Affiliations
Manuel W. Thesen, micro resist technology GmbH (Germany)
Maximilian Rumler, Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie IISB (Germany)
Florian Schlachter, AMO GmbH (Germany)
Susanne Grützner, micro resist technology GmbH (Germany)
Christian Moormann, AMO GmbH (Germany)
Mathias Rommel, Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie IISB (Germany)
Dieter Nees, JOANNEUM RESEARCH Forschungsgesellschaft mbH (Austria)
Stephan Ruttloff, JOANNEUM RESEARCH Forschungsgesellschaft mbH (Austria)
Stefan Pfirrmann, micro resist technology GmbH (Germany)
Marko Vogler, micro resist technology GmbH (Germany)
Arne Schleunitz, micro resist technology GmbH (Germany)
Gabi Grützner, micro resist technology GmbH (Germany)

Published in SPIE Proceedings Vol. 9049:
Alternative Lithographic Technologies VI
Douglas J. Resnick; Christopher Bencher, Editor(s)

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