Highly Transparent and Stretchable Conductors Based on a Directional Arrangement of Silver Nanowires by a Microliter-Scale Solution Process

Ko, Yeongun; Song, Seung Keun; Kim, Nam Hee; Chang, Suk Tai

doi:10.1021/acs.langmuir.5b03251

Cited by 51 publications

(44 citation statements)

References 47 publications

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“…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%. Ko et al prepared an STC consisting of parallel or cross‐junctions of AgNWs by simply dragging a microliter drop of the coating solution on substrate. The STC with cross‐junctions of AgNWs showed R s of 10 Ω sq −1 , transmittance of 85% at λ = 550 nm and figure of merit of more than 276.…”

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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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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“…In addition, Ag NWs were aligned in crossing directions using a microliter-scale solution process (Figure 3f). [82] Furthermore, patterning of percolated Ag NW networks was developed by the laser-induced forward transfer method [83] and photolithography. [84] Despite the outstanding properties of Ag NW-based STECs, their poor stability has remained a challenge for practical applications.…”

Section: Metal Nw-based Stecmentioning

confidence: 99%

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

Park

Parida

Lee

2017

Advanced Energy Materials

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The recent boom in deformable or stretchable electronics, flexible transparent displays/screens, and their integration into the human body has facilitated the development of multifunctional energy devices that are stretchable, transparent, wearable, and/or biocompatible while meeting the energy or power requirements. The development of soft energy systems begins with the preparation of relevant conductors and the design of innovative device configurations. In this study, recent advances and trends in stretchable and transparent electronic and ionic conductors are reviewed coupled with the growing efforts to use them for soft energy storage and conversion systems. Stretchable transparent ionic conductors present possibilities for use as current collectors and electrolytes in soft electronic/energy devices, providing novel insight into biofriendly systems for an effective human–machine interaction. Moreover, representative examples that demonstrate soft energy devices based on stretchable transparent ionic/electronic conductors are discussed in detail. Furthermore, the challenges and perspectives of developing novel stretchable transparent conductors and device configurations with tailored features are also considered.

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“…One problem with the use of ethanol as a solvent is poor adhesion of the Ag nanowires on the substrates, which makes them prone to peeling and scratching. In order to address this problem, an ink solution was formulated in order to add a protective layer on the Ag nanowire film at the same time and provide better uniformity during the coating process [45]. For a nanowire density of 0.12 mg/cm 2 , the transmittance changed from 79.6% (ethanol) to 75.0% (ink formulation).…”

Section: Fabrication Of Ag Nanowires Transparent Conducting Electrodementioning

confidence: 99%

Growth of Ultralong Ag Nanowires by Electroless Deposition in Hot Ethylene Glycol for Flexible Transparent Conducting Electrodes

Guzman

Balela

2017

Journal of Nanomaterials

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High aspect ratio silver (Ag) nanowires with an average length of 25.4 μm and diameter of 102.8 nm were successfully prepared by electroless deposition in hot ethylene glycol (160°C) for 1 h in the presence of PVP. It was found that both PVP concentration and molecular weight significantly influence the morphology and yield of Ag nanowires in solution. Using PVP MW = 55,000, addition of lower amounts of PVP led to formation of large irregularly shaped Ag particles together with a few rod-like structures. Increasing PVP concentration generally resulted in longer and thinner Ag nanowires. On the other hand, low molecular weight PVP produced spherical Ag particles even at high PVP concentration. Ag nanowire flexible transparent conducting electrodes attained a sheet resistance of about 92.5 Ω/sq at an optical transmittance of about 79.6% without any heat treatment. In addition, no significant change in optical and electrical properties was observed after several cycles of bending and adhesion test.

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Highly Transparent and Stretchable Conductors Based on a Directional Arrangement of Silver Nanowires by a Microliter-Scale Solution Process

Cited by 51 publications

References 47 publications

Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

Deformable and Transparent Ionic and Electronic Conductors for Soft Energy Devices

Growth of Ultralong Ag Nanowires by Electroless Deposition in Hot Ethylene Glycol for Flexible Transparent Conducting Electrodes

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