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Updated: Apr 24, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

From the bottom up--flexible solid state electrochromic devices.

Jacob Jensen¹, Frederik C Krebs

¹Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000, Roskilde, Denmark.

Advanced Materials (Deerfield Beach, Fla.)

|September 9, 2014

Summary

This summary is machine-generated.

Researchers developed a new method for creating flexible polymer-based electrochromic devices using a continuous, one-directional stacking process. This innovative technique avoids lamination and enables fully printed, 2D patterned organic electrochromics.

Keywords:

electrochromic devices in-situ photo crosslinking slot-die coating solid state electrolyte

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Published on: June 23, 2017

Area of Science:

Materials Science
Polymer Chemistry
Device Engineering

Background:

Electrochromic devices (ECDs) offer tunable optical properties but often require complex fabrication.
Existing methods for solid-state flexible ECDs can be labor-intensive and limit scalability.
The development of continuous, roll-to-roll compatible manufacturing processes is crucial for commercialization.

Purpose of the Study:

To develop a novel, continuous fabrication method for solid-state flexible polymer-based electrochromic devices.
To eliminate the need for a lamination step in device assembly.
To enable the production of fully printed and 2D patterned organic electrochromics.

Main Methods:

Fabrication of devices through continuous, one-directional layer stacking.
Utilized in situ photo-crosslinking of the polymer electrolyte within a specialized
curing-chamber
attached to a roll-coater.
Controlled reduction of oxygen concentration at the electrolyte surface during photo-crosslinking.

Main Results:

Successfully demonstrated a bottom-up fabrication approach for solid-state flexible polymer-based electrochromic devices.
Achieved continuous manufacturing without requiring a separate lamination step.
Enabled the creation of fully printed and 2D patterned organic electrochromic devices.

Conclusions:

The developed in situ photo-crosslinking method is effective for continuous fabrication of flexible polymer ECDs.
This approach simplifies the manufacturing process and enhances scalability.
The technology paves the way for advanced, printable organic electrochromic applications.