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Switchable Plasmonic Metasurfaces with High Chromaticity Containing only Abundant Metals
Chalmers University of Technology, Sweden.
Linköping University, Sweden.
Chalmers University of Technology, Sweden.
rdot AB, Sweden.
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2017 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 17, no 11, p. 7033-7039Article in journal (Refereed) Published
Abstract [en]

Plasmonic color generation offers several advantages but is also limited by the cost and availability of noble metals like gold. In this work, we present color-tunable metasurfaces with high chromaticity and reflectivity consisting of an aluminum mirror, a dielectric spacer, and a plasmonic nanohole array in copper. Copper is shown to be an excellent alternative to gold when properly protected from oxidation and makes it possible to generate a wide RGB gamut covering 27% of the standard RGB. By patterning the metasurfaces into microscale pixel triplets, color photos can be well reproduced with high resolution over wafer-sized areas. Further, we demonstrate active modulation of the reflected intensity using an electrochromic conductive polymer deposited on top of the nanostructures by screen printing. This technology opens up for ultrathin and flexible reflective displays in full color, that is, plasmonic electronic paper, compatible with large-scale sustainable production.

Place, publisher, year, edition, pages
2017. Vol. 17, no 11, p. 7033-7039
Keyword [en]
colors, electrochromism, electronic paper, nanostructures, Plasmons, Color, Copper, Flexible displays, Gold, Screen printing, Aluminum mirrors, Color generation, Conductive Polymer, Dielectric spacers, Electrochromics, Nanohole arrays, Reflective display, Sustainable production
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-32806DOI: 10.1021/acs.nanolett.7b03665Scopus ID: 2-s2.0-85033215998OAI: oai:DiVA.org:ri-32806DiVA: diva2:1162018
Available from: 2017-12-01 Created: 2017-12-01 Last updated: 2018-01-13Bibliographically approved

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