Electromechanical reliability of a flexible metal-grid transparent electrode prepared by electrohydrodynamic (EHD) jet printing

Yang, Sang Min; Lee, Yo Seb; Jang, Yong Suk; Byun, Doyoung; Choa, Sung‐Hoon

doi:10.1016/j.microrel.2016.07.146

Cited by 42 publications

(16 citation statements)

References 38 publications

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“…This bending did not change the temperature significantly (ΔT/T 0 ~2.3%), as shown in Figure S6. EHD jet-printing, a state-of-the-art drop-on-demand printing technique, has recently been spotlighted as a high-fidelity/large-area patterning technique in various microscale electronic devices 33,34 . We fabricate a new transparent flexible SC with exceptional highresolution via an EHD jet-printing technique (Figure S7).…”

Section: Resultsmentioning

confidence: 99%

“…By sharp contrast, the EHD jet-printed Ag grids enabled a significant reduction in the line width and height (Figure S8). Notably, the line width is far smaller than those directly detectable by human eyes, demonstrating a viable role of the EHD jet-printing in realizing the fine-resolution images that are essentially needed for transparent devices 33,34,37 . Moreover, the grid pattern in the SC electrode was not structurally disrupted after spin coating-assisted deposition of the PEDOT:PSS layer on top of the Ag grids.…”

Section: Resultsmentioning

confidence: 99%

“…In overall, the T of the SC electrodes tended to improve with increasing the grid pitch, whereas their R s became larger. Such a trade-off between the T and R s is ascribed to the scattering and reflection of incident light on the Ag grid patterns 34,37,38 . Notably, over a whole range of the grid pitches examined herein, the T of the SC electrodes remained higher than 70% (Figure S9).…”

Section: Resultsmentioning

confidence: 99%

“…EHD jet-printing, a state-of-the-art drop-on-demand printing technique, has recently been spotlighted as a high-fidelity/large-area patterning technique in various microscale electronic devices. , We fabricate a new transparent flexible SC with exceptional high resolution via an EHD jet-printing technique (Figure S7). A stepwise fabrication procedure of the transparent and flexible SC is schematically illustrated in Figure a.…”

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Integration of Transparent Supercapacitors and Electrodes Using Nanostructured Metallic Glass Films for Wirelessly Rechargeable, Skin Heat Patches

Kim

Ghidelli

et al. 2020

Nano Lett.

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Here we demonstrate an unconventional fabrication of highly transparent supercapacitors and electrodes using random networks of nanostructured metallic glass nanotroughs for their integrations as wirelessly rechargeable and invisible, skin heat patches.Transparent supercapacitors with fine conductive patterns were printed using an electrohydrodynamic jet-printing. Also, transparent and stretchable electrodes, for wireless antennas, heaters and interconnects, were formed using random network based on nanostructured CuZr nanotroughs and Ag nanowires with superb optoelectronic properties (sheet resistance of 3.0 Ω/sq at transmittance of 91.1%). Their full integrations, as an invisible heat patch on skin, enabled the wireless recharge of supercapacitors and the functions of heaters for thermal therapy of skin tissue. The demonstration of this transparent thermotherapy patch to control the blood perfusion level and hydration rate of skin suggests a promising strategy toward next-generation wearable electronics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Integration of Transparent Supercapacitors and Electrodes Using Nanostructured Metallic Glass Films for Wirelessly Rechargeable, Skin Heat Patches

Kim

Ghidelli

et al. 2020

Nano Lett.

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“…However, the efficiency of material utilisation is low because the electrodes are developed by an etching process. As an alternative material for ITO, metal-grid electrodes are promising, provided that printing technology enables the grid electrodes to be constructed at lower costs; this is because the printing technology can improve the efficiency of material utilisation as well as simplify the manufacturing process [8,9]. We have developed a gravure offset-printed invisible silver-grid (Ag-grid) laminated with poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate) (PEDOT: PSS) transparent electrodes by using Ag-nanoparticles ink [10,11].…”

mentioning

confidence: 99%

Enhanced electroluminescence in fully printable powder electroluminescent device with flexible invisible silver‐grid transparent electrode

et al. 2020

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Powder electroluminescent devices (PELDs) have a high potential for commercial application because of flat light emission devices and simple printing process fabrication with low-cost production, without semiconductor processes using vacuum and plasma. In conventional PELDs, indium tin oxide (ITO) has been used as a transparent electrode. However, ITO is unfavourable in flexible electronic devices due to its intrinsic brittleness. The authors evaluated the current and luminance characteristics of PELDs prepared on gravure offset-printed invisible silver-grid (Ag-grid) electrodes that were laminated with and without poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate) (PEDOT:PSS) transparent electrodes. The PELD on the Ag-grid laminated with PEDOT:PSS electrode shows the maximum luminance of ∼250 cd/m 2 at 200 μm spacing, which is five-fold greater than the luminance of PELD without PEDOT:PSS electrode lamination.

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Extremely Robust and Reliable Transparent Silver Nanowire‐Mesh Electrode with Multifunctional Optoelectronic Performance through Selective Laser Nanowelding for Flexible Smart Devices

2021

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As the demand for foldable or rollable smart electronic devices increases, the issue of damage caused by cyclic fatigue of the flexible transparent electrode (FTE) due to repeated bending stress at extremely low bending radius is emerging. Herein, it is demonstrated that a mesh electrode composed of silver nanowires (Ag NW–mesh) with multifunctional optoelectronic performance microfabricated without photomasking via selective laser nanowelding (SLNW) followed by soft‐etching of highly ductile Ag NWs on a flexible polymer film exhibits long‐term cycling stability at bending stresses of a 1 mm radius of curvature (ROC). In the optimal NW microgrid pattern design, the cycle fatigue resistance of NW–mesh electrodes considerably increases with increase in NW areal mass density (AMD) and decreasing microgrid spacing due to the improved weldability and networkability of NWs at a low laser energy density of 1 J cm−2. A diagonally gridded NW–mesh electrode with 30 μm line spacing exhibits extremely high reliability with little change in the performance of Joule heating and electromagnetic interference shielding under long‐term bending stresses of 300 000 cycles at 1 mm ROC. Being a simple process without photomasking, this method can easily use a multifunctional FTE with ultrahigh fatigue resistance and reliability suitable for highly flexible smart devices.

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Electromechanical reliability of a flexible metal-grid transparent electrode prepared by electrohydrodynamic (EHD) jet printing

Cited by 42 publications

References 38 publications

Integration of Transparent Supercapacitors and Electrodes Using Nanostructured Metallic Glass Films for Wirelessly Rechargeable, Skin Heat Patches

Integration of Transparent Supercapacitors and Electrodes Using Nanostructured Metallic Glass Films for Wirelessly Rechargeable, Skin Heat Patches

Enhanced electroluminescence in fully printable powder electroluminescent device with flexible invisible silver‐grid transparent electrode

Extremely Robust and Reliable Transparent Silver Nanowire‐Mesh Electrode with Multifunctional Optoelectronic Performance through Selective Laser Nanowelding for Flexible Smart Devices

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