Metal nanowire percolation micro-grids embedded in elastomers for stretchable and transparent conductors

Park, Sang-Min; Jang, Nam-Su; Ha, Sung‐Hun; Kim, Kang Hyun; Jeong, Dong-Wook; Kim, Jeonghyo; Lee, Jaebeom; Kim, Sung Hyun; Kim, Jong-Man

doi:10.1039/c5tc00740b

Cited by 33 publications

(29 citation statements)

References 31 publications

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“…In addition, the features of the stretchable conducting components (such as roughness, thin‐film formability, and patternability during the fabrication process) must also be considered. The conducting components normally used for stretchable electrodes are often conductive nanoscale materials such as silver nanowires (AgNWs), copper nanowires (CuNWs), graphene, carbon nanotubes (CNTs), and conductive polymers . These conducting nanomaterials (in the form of thin films or a hybrid structure) can absorb mechanical strain by themselves.…”

Section: Stretchable Conductorsmentioning

confidence: 99%

“…The stretchable and transparent electrode based on the AgNWs/PUU/PDMS structure could be stretched to a strain of 50% with high stability and reversibility. Park et al also used photolithography and spray‐coating methods to pattern AgNWs in microgrids, which were embedded into a PDMS substrate. The fabricated AgNWs/PDMS micropattern was uniform, reproducible, and stretchable.…”

Section: Stretchable Conductorsmentioning

confidence: 99%

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Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components

2016

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Stretchable electronic devices with intrinsically stretchable components have significant inherent advantages, including simple fabrication processes, a high integrity of the stacked layers, and low cost in comparison with stretchable electronic devices based on non-stretchable components. The research in this field has focused on developing new intrinsically stretchable components for conductors, semiconductors, and insulators. New methodologies and fabrication processes have been developed to fabricate stretchable devices with intrinsically stretchable components. The latest successful examples of stretchable conductors for applications in interconnections, electrodes, and piezoresistive devices are reviewed here. Stretchable conductors can be used for electrode or sensor applications depending on the electrical properties of the stretchable conductors under mechanical strain. A detailed overview of the recent progress in stretchable semiconductors, stretchable insulators, and other novel stretchable materials is also given, along with a discussion of the associated technological innovations and challenges. Stretchable electronic devices with intrinsically stretchable components such as field-effect transistors (FETs), photodetectors, light-emitting diodes (LEDs), electronic skins, and energy harvesters are also described and a new strategy for development of stretchable electronic devices is discussed. Conclusions and future prospects for the development of stretchable electronic devices with intrinsically stretchable components are discussed.

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Section: Stretchable Conductorsmentioning

confidence: 99%

Section: Stretchable Conductorsmentioning

confidence: 99%

Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components

2016

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“…For example, percolation networks of one-dimensional (1-D) nanostructures (nanowires (NWs), nanorods, nanotubes, etc.) 5 – 17 , 2-D materials (graphene and MnO 2 , etc.) 18 – 20 and conducting polymers (PEDOT:PSS, polyaniline, etc.)…”

Section: Introductionmentioning

confidence: 99%

“… 18 – 20 and conducting polymers (PEDOT:PSS, polyaniline, etc.) 21 – 23 are utilized in a wide range of electronic devices 5 – 15 , 18 – 23 . In particular, percolation networks of 1-D nanostructures have been extensively investigated for applications of flexible TCEs 5 – 15 .…”

Section: Introductionmentioning

confidence: 99%

Computational characterization and control of electrical conductivity of nanowire composite network under mechanical deformation

Hwang

Sohn

Lee

2018

Sci Rep

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Quantitative models to predict the electrical performance of 1-D nanowire (NW) composite networks under external deformation such as bending and patterning are developed by Monte-Carlo based computations, and appropriate solutions are addressed to enhance the tolerance of the sheet resistance (Rs) of the NW networks under the deformation. In addition, several strategies are employed to improve further the robustness of the sheet resistance against the network deformation. In the case of bending, outstanding bending durability of a hybrid NW network coated on a 2-D sheet is confirmed with a numerical model, and a network of NWs aligned unidirectionally toward bend axis is introduced to alleviate the sheet resistance degradation. In the case of a narrowly patterned channel, the conductivity enhancement of a network of NWs aligned in parallel to the channel with reduced channel is validated, and a network made with two types of NWs with different lengths is suggested to enhance the tolerance of the electrical conductivity. The results offer useful design guidelines to the use of the 1-D NW percolation network for flexible transparent conducting electrodes.

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“…Also, due to the sandwich structure of STC, it exhibited excellent chemical stability, and its conductivity was fairly stable after 400 stretching–releasing cycles with tensile strain up to 50%. Park et al obtained an STC consisting of percolation microgrids of AgNWs on PDMS with orthorhombic groove. This STC showed optical transmittance of 85.8%, R s of 26.1 Ω sq −1 , and an increase of 127% in resistance at tensile strain of 30%.…”

Section: Structure‐dependent Properties Of Stcsmentioning

confidence: 99%

Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

Chen

Fang

et al. 2019

Advanced Materials

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electronics include stretchable solar cells, [2] stretchable organic light emitting diodes (OLEDs), [3] stretchable field-effect transistors (FETs), [4] stretchable supercapacitors, [5] stretchable actuators [6] and heaters, [7] etc. The emerging of stretchable electronics has foreseen the revolution of future electronics, ranging from design, shape and functions to installation, applications and even user experience. For example, stretchable optoelectronics, such as solar cells and OLEDs, are conformable, rollable and foldable. They can be installed on irregularly shaped roof or side walls of buildings, vehicles and other public utilities. Similarly, stretchable sensors used as e-skin can not only fit motions at joints of human or robots with tensile strain of large than 100%, [1e] but also sense signals related to strain, temperature, humidity and even blood pressure. [8] Moreover, the integration of different kinds of stretchable electronics may exhibit diversity in functions. [9] For instance, wearable devices of stretchable energy harvesting and storage electronics combining with stretchable sensors and heaters may sense the biomedical signal and keep the patient warm with the power collected from solar/friction energy. More potential applications of stretchable electronics in different fields, not restricted to the above examples, will be seen in the future.Stretchable transparent conductors (STCs) are fundamental components in stretchable electronics. They generally consist of a stretchable transparent polymeric substrate and a layer of conducting elements on or embedded in the substrate. The substrates involve poly(dimethyl siloxane) (PDMS) and polyacrylate-based elastomers [10] while the conducting elements include conducting polymers, [11] metal nanowires, [12] carbon nanotubes (CNTs), [13] graphene [14] or their hybrids. The substrates generally show transmittance of higher than 90% [15] and can be stretched to a strain of larger than 100%, e.g., PDMS and VHB (a typical acrylic elastomer) could exhibit a fracture tensile strain up to ≈160% [16] and several hundred percentages, [6a,17] respectively. STCs could be considered as the combination of transparent conductors and stretchable conductors; [18] they can simultaneously show stable conductivity and transparency upon deformation, including bending, folding, twisting, crumpling, stretching, etc. The transparency of STCs is attributed to the low attenuation of visible light by the substrate and the conducting layer. The conductivity is obtained due to the continuity of conducting layer either via uniform film or the connection of Stretchable transparent conductors (STCs), generally consisting of conducting networks and stretchable transparent elastomers, can maintain stable conductivity and transparency even at large tensile strain, beyond the reach of rigid/flexible transparent conductors. They are essential components in stretchable/wearable electronics for using on irregular 3D conformable surfaces and have attracted tremendous attention ...

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Metal nanowire percolation micro-grids embedded in elastomers for stretchable and transparent conductors

Cited by 33 publications

References 31 publications

Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components

Recent Progress on Stretchable Electronic Devices with Intrinsically Stretchable Components

Computational characterization and control of electrical conductivity of nanowire composite network under mechanical deformation

Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

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