Surfactant-free synthesis of ultralong silver nanowires for durable transparent conducting electrodes

Tseng, Sheng-Hsiang; Lyu, Lian‐Ming; Hsiao, Kai‐Yuan; Ho, Wan-Hua; Lu, Ming-Yen

doi:10.1039/d0cc01915a

Cited by 15 publications

(11 citation statements)

References 41 publications

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“…Recent studies report replacing (the PVP) capping agent and passivation with other molecules like 11-mercaptoundecanoic acid (MUA) to increase the chemical stability, [156] or other surfactant-free approaches. [157] Other prominent types of MNWs for TEs have also been investigated, such as Cu nanowires (CuNWs), [30,29,158,159,31] cupronickel nanowires, [33,160] and Cu-graphene core-shell nanowires. [161,162] While Cu-based nanowires have great potential due to their significantly lower raw material cost, their synthesis is less mastered and reproducible compared to AgNWs.…”

Section: Metal Nanowire (Mnw) Networkmentioning

confidence: 99%

Advances in Flexible Metallic Transparent Electrodes

Nguyễn

Papanastasiou

Resende³

et al. 2022

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Transparent electrodes (TEs) are pivotal components in many modern devices such as solar cells, light‐emitting diodes, touch screens, wearable electronic devices, smart windows, and transparent heaters. Recently, the high demand for flexibility and low cost in TEs requires a new class of transparent conductive materials (TCMs), serving as substitutes for the conventional indium tin oxide (ITO). So far, ITO has been the most used TCM despite its brittleness and high cost. Among the different emerging alternative materials to ITO, metallic nanomaterials have received much interest due to their remarkable optical‐electrical properties, low cost, ease of manufacturing, flexibility, and widespread applicability. These involve metal grids, thin oxide/metal/oxide multilayers, metal nanowire percolating networks, or nanocomposites based on metallic nanostructures. In this review, a comparison between TCMs based on metallic nanomaterials and other TCM technologies is discussed. Next, the different types of metal‐based TCMs developed so far and the fabrication technologies used are presented. Then, the challenges that these TCMs face toward integration in functional devices are discussed. Finally, the various fields in which metal‐based TCMs have been successfully applied, as well as emerging and potential applications, are summarized.

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Section: Metal Nanowire (Mnw) Networkmentioning

confidence: 99%

Advances in Flexible Metallic Transparent Electrodes

Nguyễn

Papanastasiou

Resende³

et al. 2022

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“…The distinct transverse and longitudinal plasmon peaks of one-dimensional (1D) gold and silver nanostructures make them perfect candidates for several applications in plasmonic waveguides, − photonics, − sensors, − and nanoelectronics. − Therefore, significant research progress has been reported on the synthesis of metallic nanowires: mainly silver and gold nanowires (AuNWs) in the last 2 decades. Various methods such as chemical, ,− template-assisted, − and lithographic fabrication − have been reported for the synthesis of AuNWs.…”

Section: Introductionmentioning

confidence: 99%

Gold Nanowires from Nanorods

Khanal

Zubarev

2020

Langmuir

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Gold nanowires (AuNWs) possess strong potential application in micro-and nanoelectronics as well as in plasmonic waveguides because of their low electrical resistance. However, the synthesis of pure solvent-dispersible AuNWs with full control over their length still remains a challenge. All the previously reported methods produce AuNWs with other impurities such as smaller nanorods, platelets, and spherical particles and are limited to a certain length (typically below 10 μm). This article describes a onestep synthesis of extremely long AuNWs (up to 25 μm) with great control over their dimensions by using pentahedrally twinned gold nanorods (AuNRs) as seed particles. To induce the AuNW growth, the reduction of Au(I) to Au(0) was carried out on the surface of AuNRs at a very low pH by introducing HCl into the growth solution. The slow conversion of Au(I) to Au(0) due to the increase in reduction potential at lower pH promoted the preferential deposition of metallic gold on the more reactive tips of AuNRs compared to their sides, resulting in the formation of AuNWs. In analogy to the "living" polymerization reaction, the length of the AuNWs was proportional to the amount of Au(I) added to the growth solution; thus, the desired length of AuNWs was achieved by controlling the supply of Au(I) ions in the reaction mixture. The AuNWs longer than 6 μm were found to be responsive to microwave radiation. When an aqueous solution of AuNWs was exposed to microwaves, the formation of sharp kinks was observed in several locations of AuNWs without their disintegration into smaller pieces.

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“…In addition, silver nanowire (AgNW) is a widely used 1D metallic filler with remarkable malleability, mechanical robustness, and electrical conductivity . Many works were developed to form AgNW conductors from AgNW solution via deposition methods, − such as spray-coating, vacuum filtration followed by transfer, Meyer rod coating, and drop-casting. Intrinsically, they have high conductivity but limited stretchability.…”

Section: Silicone Rubber Based-conductive Compositesmentioning

confidence: 99%

Silicone Rubber Based-Conductive Composites for Stretchable “All-in-One” Microsystems

Deng

Wen

Feng

et al. 2022

ACS Appl. Mater. Interfaces

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Wearable electronics with development trends such as miniaturization, multifunction, and smart integration have become an important part of the Internet of Things (IoT) and have penetrated various sectors of modern society. To meet the increasing demands of wearable electronics in terms of deformability and conformability, many efforts have been devoted to overcoming the nonstretchable and poor conformal properties of traditional functional materials and endowing devices with outstanding mechanical properties. One of the promising approaches is composite engineering in which traditional functional materials are incorporated into the various polymer matrices to develop different kinds of functional composites and construct different functions of stretchable electronics. Herein, we focus on the approach of composite engineering and the polymer matrix of silicone rubber (SR), and we summarize the state-of-the-art details of silicone rubber-based conductive composites (SRCCs), including a summary of their conductivity mechanisms and synthesis methods and SRCC applications for stretchable electronics. For conductivity mechanisms, two conductivity mechanisms of SRCC are emphasized: percolation theory and the quantum tunneling mechanism. For synthesis methods of SRCCs, four typical approaches to synthesize different kinds of SRCCs are investigated: mixing/blending, infiltration, ion implantation, and in situ formation. For SRCC applications, different functions of stretchable electronics based on SRCCs for interconnecting, sensing, powering, actuating, and transmitting are summarized, including stretchable interconnects, sensors, nanogenerators, antennas, and transistors. These functions reveal the feasibility of constructing a stretchable all-in-one self-powered microsystem based on SRCC-based stretchable electronics. As a prospect, this microsystem is expected to integrate the functional sensing modulus, the energy harvesting modulus, and the process and response modulus together to sense and respond to environmental stimulations and human physiological signals.

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Surfactant-free synthesis of ultralong silver nanowires for durable transparent conducting electrodes

Abstract: The present study employed the surfactant-free growth of ultralong (∼50 μm) silver nanowires (AgNWs) with a high aspect ratio (more than 1000) by galvanic replacement.

Cited by 15 publications

References 41 publications

Advances in Flexible Metallic Transparent Electrodes

Advances in Flexible Metallic Transparent Electrodes

Gold Nanowires from Nanorods

Silicone Rubber Based-Conductive Composites for Stretchable “All-in-One” Microsystems

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