Color switching of electrochromic polymer in plasmonic environment (Conference Presentation)

Mohammad Shahabuddin; Natalia Noginova

doi:10.1117/12.2323194

17 September 2018 Color switching of electrochromic polymer in plasmonic environment (Conference Presentation)

Mohammad Shahabuddin, Natalia Noginova

Proceedings Volume 10719, Metamaterials, Metadevices, and Metasystems 2018; 1071924 (2018) https://doi.org/10.1117/12.2323194
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Electrochromic materials demonstrating reversible color upon application of a small voltage are of interest for various optoelectronic applications. Polyaniline (PANI) is a promising material due to its high conductivity, high contrast in coloration change, low operation voltages, and long-term stability without degradation as compared to other conducting polymers. However, very slow color switching limits its use in modern applications. In this work, we explore opportunities to enhance PANI performance with effects of the modified local environment in vicinity of plasmonic metasurfaces. We study the changes in coloration as a response to applied potential in the circular voltammetry setup, simultaneously recording both electric current and changes in reflectivity, and compare the effects observed in thin PANI films deposited on gold nanomesh structures with those in films deposited on flat gold. The films deposited onto gold metasurfaces demonstrate much sharper response and faster saturation in color with the increase in voltage than those on the flat gold. Additional features are seen at small voltages (0.1 V). Based on our experimental results, the enhanced switching is likely associated with the accelerated charge transport in vicinity of the metasurface and not related to charging or hot electrons.

Conference Presentation

Citation Download Citation

Mohammad Shahabuddin and Natalia Noginova "Color switching of electrochromic polymer in plasmonic environment (Conference Presentation)", Proc. SPIE 10719, Metamaterials, Metadevices, and Metasystems 2018, 1071924 (17 September 2018); https://doi.org/10.1117/12.2323194

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KEYWORDS

Switching

Plasmonics

Polymers

Gold

Electrons

Optoelectronics

Reflectivity

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