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Greyscale and Paper Electrochromic Polymer Displays by UV Patterning

Authors :
Robert Brooke
Jesper Edberg
Xavier Crispin
Magnus Berggren
Isak Engquist
Magnus P. Jonsson
Source :
Polymers, Vol 11, Iss 2, p 267 (2019)
Publication Year :
2019
Publisher :
MDPI AG, 2019.

Abstract

Electrochromic devices have important implications as smart windows for energy efficient buildings, internet of things devices, and in low-cost advertising applications. While inorganics have so far dominated the market, organic conductive polymers possess certain advantages such as high throughput and low temperature processing, faster switching, and superior optical memory. Here, we present organic electrochromic devices that can switch between two high-resolution images, based on UV-patterning and vapor phase polymerization of poly(3,4-ethylenedioxythiophene) films. We demonstrate that this technique can provide switchable greyscale images through the spatial control of a UV-light dose. The color space was able to be further altered via optimization of the oxidant concentration. Finally, we utilized a UV-patterning technique to produce functional paper with electrochromic patterns deposited on porous paper, allowing for environmentally friendly electrochromic displays.

Details

Language :
English
ISSN :
20734360
Volume :
11
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Polymers
Publication Type :
Academic Journal
Accession number :
edsdoj.be12241f984c4c8aa292fbac66e11bfe
Document Type :
article
Full Text :
https://doi.org/10.3390/polym11020267