期刊
NANO LETTERS
卷 17, 期 11, 页码 7033-7039出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b03665
关键词
Plasmons; colors; nanostructures; electrochromism; electronic paper
类别
资金
- 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 Advance
- Swedish Foundation for Strategic Research (SSF) [RMA11-0037] Funding Source: Swedish Foundation for Strategic Research (SSF)
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.
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