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Title: Flexible electrochromic fiber with rapid color switching and high optical modulation
Authors: Zhu, Tianxue
Xiong, Jiaqing
Chen, Jingwei
Zhou, Xinran
Cai, Guofa
Lai, Yuekun
Lee, Pooi See
Keywords: Engineering::Materials
Issue Date: 2021
Source: Zhu, T., Xiong, J., Chen, J., Zhou, X., Cai, G., Lai, Y. & Lee, P. S. (2021). Flexible electrochromic fiber with rapid color switching and high optical modulation. Nano Research.
Project: NRF-NRFI201605
Journal: Nano Research
Abstract: Though flexible electrochromic devices have shown huge potential application in the fields of safety warning, display and smart windows, limited attention was paid on preparing flexible electrochromic fiber because of the difficulty in fabricating the multilayer electrochromic device structure in one-dimensional form. In this study, a flexible electrochromic nylon fiber based on Ag nanowires (NWs)/PEDOT:PSS/WO3 nanoparticles (NPs) (PEDOT:PSS = poly(3,4-ethylenedioxythiophene):polystyrenesulfonic acid) is successfully fabricated, delivering rapid color switching (2.5 and 9 s for bleaching and coloration) and high optical modulation (65.5% at 633 nm), and sustainable to repeated mechanical deformations. Ag NWs, PEDOT:PSS and WO3 NPs were dip-coated on the nylon fiber, resulting in an electrochromic fiber electrode with stable fiber resistance of 50–100 Ω/10 cm, which can withstand mechanical deformation against 300 times of bending cycles with bending radius of 0.5 cm, and sustain 30 times of tape-peeling. During the galvanostatic tests, the capacitance of the electrochromic electrode can maintain 70% of the initial value even after 5,000 times of charge-discharge cycles. Even in knotted shape, the fiber still shows excellent color contrast. This study provides a novel method to construct flexible electrochromic fiber and pave the way for the development of flexible optoelectronic devices, such as flexible and wearable displays. [Figure not available: see fulltext.]
ISSN: 1998-0124
DOI: 10.1007/s12274-021-3798-9
Rights: © 2021 Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature. All rights reserved. This paper was published in Nano Research and is made available with permission of Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.
Fulltext Permission: embargo_20220830
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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