Highly stretchable transparent bar coated Ag NW/PEDOT:PSS hybrid electrode for wearable and stretchable devices

Lee, Ju-Hyeon; Raman, V.; Kang, Chaeyoung; Ha, Hyunuk; Seok, Hae‐Jun; Kim, Han‐Ki

doi:10.1039/d1ra08173j

Cited by 14 publications

(9 citation statements)

References 48 publications

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“…During the inner-bending fatigue test, although the compressive stress formed several cracks in the MA-composite electrode, they mutually overlapped. Moreover, although the measured resistance variation slowly increased, the tested MA-composite electrode exhibited severe cracking . The nontested and tested PTFE-passivated MA-composite electrodes maintained constant resistance changes during 5000 cycles of the dynamic bending-fatigue test, thereby verifying the stable flexibility of the electrode regardless of the 85 °C–85% RH test.…”

Section: Resultsmentioning

confidence: 77%

Conformal Passivation of Self-Cleanable, Flexible, and Transparent Polytetrafluoroethylene Thin Films on Two-Dimensional MXene and Three-Dimensional Ag Nanowire Composite Electrodes

Kim

Kang

Choi

et al. 2023

ACS Appl. Electron. Mater.

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Despite the excellent performance of MXene−Ag nanowire (MA) composite transparent conductive electrodes (TCEs), they rapidly and severely degrade in ambient and humid environments. To address this critical issue, we developed conformal polytetrafluoroethylene (PTFE) passivation thin films prepared using magnetron sputtering at room temperature. Compared to the PTFE passivated electrode, the nonpassivated bare MA-composite electrode exhibited a considerably increased sheet resistance, and the electrode flexibility and electromagnetic interference (EMI) shielding efficiency (SE) degraded rapidly over time because the moisture and impurities severely oxidized the MXene layer in the harsh testing environment. However, the MA-composite electrode with PTFE passivation shows constant sheet resistance, transmittance, flexibility, and EMI SE, even after the 85 °C−85% relative humidity (RH) test. Compared to the nonpassivated MA-electrode-based thin film heaters (TFHs), the PTFE-passivated MA-composite electrode-based TFHs exhibited improved stability and reliability, indicating that the sputtered PTFE film effectively prevented the moisture and impurity penetration of the MA-composite electrodes.

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Section: Resultsmentioning

confidence: 77%

Conformal Passivation of Self-Cleanable, Flexible, and Transparent Polytetrafluoroethylene Thin Films on Two-Dimensional MXene and Three-Dimensional Ag Nanowire Composite Electrodes

Kim

Kang

Choi

et al. 2023

ACS Appl. Electron. Mater.

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“…Although PEDOT/PSS has shown enormous potential as electro-conductive polymers for the manufacturing of bioelectronic devices owing to its high capacitance and low impedance, − their poor mechanical and electrochemical stability hinder their long-term applications in vivo . To address this issue, we introduced PVA, a biocompatible and film-forming hydrogel, to prepare conducting polymer-hydrogel films.…”

Section: Results and Discussionmentioning

confidence: 99%

Conducting Polymer-Hydrogel Interpenetrating Networks for Improving the Electrode–Neural Interface

Yan,

Wang,

et al. 2023

ACS Appl. Mater. Interfaces

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Implantable neural microelectrodes are recognized as a bridge for information exchange between inner organisms and outer devices. Combined with novel modulation technologies such as optogenetics, it offers a highly precise methodology for the dissection of brain functions. However, achieving chronically effective and stable microelectrodes to explore the electrophysiological characteristics of specific neurons in free-behaving animals continually poses great challenges. To resolve this, poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)/poly(vinyl alcohol) (PEDOT/PSS/PVA) interpenetrating conducting polymer networks (ICPN) are fabricated via a hydrogel scaffold precoating and electrochemical polymerization process to improve the performance of neural microelectrodes. The ICPN films exhibit robust interfacial adhesion, a significantly lower electrochemical impedance, superior mechanical properties, and improved electrochemical stability compared to the pure poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)(PEDOT/PSS) films, which may be attributed to the three-dimensional (3D) porous microstructure of the ICPN. Hippocampal neurons and rat pheochromocytoma cells (PC12 cells) adhesion on ICPN and neurite outgrowth are observed, indicating enhanced biocompatibility. Furthermore, alleviated tissue response at the electrode–neural tissue interface and improved recording signal quality are confirmed by histological and electrophysiological studies, respectively. Owing to these merits, optogenetic modulations and electrophysiological recordings are performed in vivo, and an anxiolytic effect of hippocampal glutamatergic neurons on behavior is shown. This study demonstrates the effectiveness and advantages of ICPN-modified neural implants for in vivo applications.

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“…As shown in Fig. 11b-i, Lee et al 183 coated AgNWs/PEDOT:PSS hybrid ink (AP ink) onto a PU substrate by rod coating, then dried the sample and spin-coated PDMS as a protective layer. The optimized AP electrode has a sheet resistance of 14.93 O sq À1 and a light transmittance of 88.6% at a wavelength of 550 nm.…”

Section: Deposition Methodsmentioning

confidence: 99%

Recent advances in the construction and application of stretchable PEDOT smart electronic membranes

Chen,

Ye,

Cang

et al. 2023

J. Mater. Chem. C

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Highly stretchable transparent bar coated Ag NW/PEDOT:PSS hybrid electrode for wearable and stretchable devices

Abstract: PEDOT:PSS, the highly stretchable and conductive polymer, can enhances the stretchability of Ag NW electrodes when mixed with Ag NW. Because PEDOT:PSS is still connected to the disconnected Ag NWs, the electrode has enhanced stretchability.

Cited by 14 publications

References 48 publications

Conformal Passivation of Self-Cleanable, Flexible, and Transparent Polytetrafluoroethylene Thin Films on Two-Dimensional MXene and Three-Dimensional Ag Nanowire Composite Electrodes

Conformal Passivation of Self-Cleanable, Flexible, and Transparent Polytetrafluoroethylene Thin Films on Two-Dimensional MXene and Three-Dimensional Ag Nanowire Composite Electrodes

Conducting Polymer-Hydrogel Interpenetrating Networks for Improving the Electrode–Neural Interface

Recent advances in the construction and application of stretchable PEDOT smart electronic membranes

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