Issue 14, 2021

Flexible electrochromic devices prepared on ultra-thin ITO glass

Abstract

Electrochromic devices (ECDs) containing iron-based metallo-supramolecular polymers (Fe-MEPE) and Prussian blue (PB) as active electrode materials, a polymer electrolyte and flexible ultra-thin indium tin oxide (ITO) glass as transparent conductive substrate are demonstrated here. The electrochromic Fe-MEPE and PB thin films were deposited on ultra-thin ITO glass by means of dip coating and electrodeposition, respectively, and characterized optically and (spectro-)electrochemically. By applying a low voltage of 2.5 V/−0.5 V, the Fe-MEPE/PB ECDs can be reversibly switched from a blue-colored dark state to a nearly colorless bright state with a visible light transmittance (τv) change from 8% to 58%. The devices exhibit a fast response for decoloration/coloration and good cycling stability tested over 250 switching cycles without any substantial loss of optical contrast. Thus, these ECDs based on ultra-thin glass are very attractive for flexible, lightweight, and low-power electrochromic applications, e.g., in architectural or automotive glazing, aircraft, marine, home appliances, and displays.

Graphical abstract: Flexible electrochromic devices prepared on ultra-thin ITO glass

Supplementary files

Article information

Article type
Paper
Submitted
23 Agd 2021
Accepted
03 Qas 2021
First published
07 Qas 2021
This article is Open Access
Creative Commons BY license

Mater. Adv., 2021,2, 4659-4666

Flexible electrochromic devices prepared on ultra-thin ITO glass

M. Schott, L. Niklaus, C. Müller, B. Bozkaya and G. A. Giffin, Mater. Adv., 2021, 2, 4659 DOI: 10.1039/D1MA00376C

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