Dynamically Tuneable Reflective Structural Coloration with Electroactive Conducting Polymer Nanocavities
Artikel i vetenskaplig tidskrift, 2021

Dynamic control of structural colors across the visible spectrum with high brightness has proven to be a difficult challenge. Here, this is addressed with a tuneable reflective nano-optical cavity that uses an electroactive conducting polymer (poly(thieno[3,4-b]thiophene)) as spacer layer. Electrochemical doping and dedoping of the polymer spacer layer provides reversible tuning of the cavity's structural color throughout the entire visible range and beyond. Furthermore, the cavity provides high peak reflectance that varies only slightly between the reduced and oxidized states of the polymer. The results indicate that the polymer undergoes large reversible thickness changes upon redox tuning, aided by changes in optical properties and low visible absorption. The electroactive cavity concept may find particular use in reflective displays, by opening for tuneable monopixels that eliminate limitations in brightness of traditional subpixel-based systems.

electroactive nanocavity

conductive polymer

structural colors


reflective displays


Stefano Rossi

Linköpings universitet

Oliver Olsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Shangzhi Chen

Linköpings universitet

Ravi Shanker

Linköpings universitet

Debashree Banerjee

Linköpings universitet

Andreas Dahlin

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Magnus Jonsson

Linköpings universitet

Advanced Materials

09359648 (ISSN) 15214095 (eISSN)

Vol. 33 49 2105004



Textil-, gummi- och polymermaterial

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