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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

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Multicolor and Multistage Response Electrochromic Color-Memory Wearable Smart Textile and Flexible Display.

Chengcheng Wang¹, Xiaojun Jiang², Peng Cui¹

¹Key Laboratory of Science & Technology of Eco-Textile, Jiangnan University, Ministry of Education, Wuxi, Jiangsu 214122, China.

ACS Applied Materials & Interfaces

|March 3, 2021

Summary

Researchers developed electrochromic color-memory microcapsules for smart textiles. These energy-efficient materials offer a stable color memory, overcoming challenges in continuous power supply for wearable devices.

Keywords:

color-memory electrochromic flexible display microcapsules smart textiles

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Area of Science:

Materials Science
Textile Engineering

Background:

Electrochromic materials are crucial for soft displays and devices.
Continuous power supply remains a challenge for ideal electrochromic textiles.

Purpose of the Study:

To develop electrochromic color-memory microcapsules (ECM-Ms) for energy-efficient and convenient applications.
To address the limitations of continuous power supply in electrochromic textiles.

Main Methods:

Fabrication of red, yellow, and blue electrochromic color-memory microcapsules.
Characterization of their performance including drive voltage, coloration efficiency, response rate, and color-memory stability.
Investigating the control mechanism of color-memory based on oxidation-reduction reaction energy differences.

Main Results:

Developed ECM-Ms with low drive voltage (2.0 V), high coloration efficiency (921.6 cm² C⁻¹), and practical response rate (34.4 s⁻¹).
Achieved significant color-memory performance (>72 h) and reversibility (≥1000 cycles).
Demonstrated a multicolor, multistage response electrochromic color-memory wearable smart textile and flexible display.

Conclusions:

The developed ECM-Ms offer a viable solution for energy-efficient electrochromic textiles and displays.
The color-memory mechanism, controlled by reaction energy differences, shows potential for advanced sensors and smart textiles.