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Title: A highly bendable transparent electrode for organic electrochromic devices
Authors: Che, Boyang
Zhou, Dan
Li, Hui
He, Chaobin
Liu, Erjia
Lu, Xuehong
Keywords: Engineering::Materials
Issue Date: 2019
Source: Che, B., Zhou, D., Li, H., He, C., Liu, E. & Lu, X. (2019). A highly bendable transparent electrode for organic electrochromic devices. Organic Electronics, 66, 86-93.
Journal: Organic Electronics
Abstract: In this article, we report a thin film of polyaniline (PANI)-grafted single-walled/double-walled carbon nanotubes (CNTs) on polyethylene terephthalate (PET) as a transparent electrode for highly bendable electrochromic films. Our results show that the high conductivity of the PANI-CNT/PET electrode brought by its conductive CNT network, as well as the strong conjugation between CNTs and PANI, can be well retained even after 9000 cycles of bending with a bending radius of 0.6 cm, which is superior to that of the most widely used transparent electrode, indium tin oxide (ITO) on PET. By electrodeposition of PANI on the PANI-CNT/PET electrode, the overall electrochromic performance of the PANI-deposited PANI-CNT/PET (PANI/PANI-CNT/PET) is comparable to its PANI/ITO/PET counterpart, whereas after 100 cycles of bending, PANI/PANI-CNT/PET can much better retain its initial electrochromic performance than PANI/ITO/PET. The mechanism for the enhanced bendability is studied via impedance analysis. It shows that the enhancement is mainly due to the robust interface between the PANI-based electrode and active layer. The findings provide a new avenue for rational design of highly bendable electrodes for flexible electrochromic devices.
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2018.12.015
Rights: © 2018 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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