Electrochromic Inorganic Nanostructures with High Chromaticity and Superior Brightness
Artikel i vetenskaplig tidskrift, 2021

The possibility of actively controlling structural colors has recently attracted a lot of attention, in particular for new types of reflective displays (electronic paper). However, it has proven challenging to achieve good image quality in such devices, mainly because many subpixels are necessary and the semitransparent counter electrodes lower the total reflectance. Here we present an inorganic electrochromic nanostructure based on tungsten trioxide, gold, and a thin platinum mirror. The platinum reflector provides a wide color range and makes it possible to "reverse"the device design so that electrolyte and counter electrode can be placed behind the nanostructures with respect to the viewer. Importantly, this makes it possible to maintain high reflectance regardless of how the electrochemical cell is constructed. We show that our nanostructures clearly outperform the latest commercial color e-reader in terms of both color range and brightness.

Tungsten trioxide

Reflective displays

Fabry-Pérot cavity

Electrochromism

Författare

Marika Gugole

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Andreas Dahlin Group

Oliver Olsson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Andreas Dahlin Group

Stefano Rossi

Linköpings universitet

Martin Jonsson

Linköpings universitet

Andreas Dahlin

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Andreas Dahlin Group

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 21 10 4343-4350

Ämneskategorier

Medieteknik

Människa-datorinteraktion (interaktionsdesign)

Mediateknik

DOI

10.1021/acs.nanolett.1c00904

PubMed

33969987

Mer information

Senast uppdaterat

2021-06-11