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Switchable Plasmonic Metasurfaces with High Chromaticity Containing Only Abundant Metals
Chalmers University of Technology, Göteborg, Sweden.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Chalmers University of Technology, Göteborg, Sweden.
rdot AB (559092-9831), Stena Center 1, Göteborg, 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
American Chemical Society (ACS), 2017. Vol. 17, no 11, p. 7033-7039
Keywords [en]
colors; electrochromism; electronic paper; nanostructures; Plasmons
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-143686DOI: 10.1021/acs.nanolett.7b03665ISI: 000415029000079PubMedID: 29028347OAI: oai:DiVA.org:liu-143686DiVA, id: diva2:1165828
Note

Funding agencies: Swedish Foundation for Strategic Research [RMA11-0037]; Wenner-Gren Foundations; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; Chalmers Nanoscience and Nanotechnology Area of 

Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2018-01-11

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