A Tunable Polymer-Metal Based Anti-Reflective Metasurface
Yannic Brasse, Charlene Ng, Michele Magnozzi, Heyou Zhang, Paul Mulvaney, Andreas Fery, Daniel E Gomez
MACROMOLECULAR RAPID COMMUNICATIONS | WILEY-V C H VERLAG GMBH | Published : 2019
Anti-reflective surfaces are of great interest for optical devices, sensing, photovoltaics, and photocatalysis. However, most of the anti-reflective surfaces lack in situ tunability of the extinction with respect to wavelength. This communication demonstrates a tunable anti-reflective surface based on colloidal particles comprising a metal core with an electrochromic polymer shell. Random deposition of these particles on a reflective surface results in a decrease in the reflectance of up to 99.8% at the localized surface plasmon resonance frequency. This narrow band feature can be tuned by varying the pH or by application of an electric potential, resulting in wavelength shifts of up to 30 n..View full abstract
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Awarded by ARC
This work was supported by the "Bayreuth-Melbourne Colloid/Polymer Network" with funding from the German Academic Exchange Service "DAAD." The authors acknowledge the Cluster of Excellence Center for Advancing Electronics Dresden (cfaed). The authors thank Inga Melnyk for conducting SEM measurements. Y.B. acknowledges support through elite study program Macromolecular Science by Elitenetzwerk Bayern and the University of Bayreuth. C.N. is supported by the Alexander von Humboldt Foundation as a Postdoctoral Fellow. P.M. thanks the ARC for support through grant CE170100026. D.G. acknowledges the A.R.C. for support via a Future Fellowship grant FT140100514.