Synthesis of dimension-controlled silver nanowires for highly conductive and transparent nanowire films

Lee, Ho Seok; Kim, Yeon Won; Kim, Jong‐Eun; Yoon, Sung Woon; Kim, Tae Young; Noh, Jin−Seo; Suh, Kwang S.

doi:10.1016/j.actamat.2014.09.042

Cited by 44 publications

(25 citation statements)

References 31 publications

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“…where a is a critical exponent for the conduction, which has a value of 1.33 for 2-D networks and 1.94 for 3-D networks [29,30]. According to the above formula, with the same wire length, N c keeps invariant, but when the wire diameter decreases, N would increase, then, the R s value of the film would be reduced.…”

Section: Resultsmentioning

confidence: 93%

Highly bendable, transparent, and conductive AgNWs-PET films fabricated via transfer-printing and second pressing technique

Jing

Chen

et al. 2015

J Mater Sci

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Highly bendable, transparent, and conductive films composed of silver nanowires (AgNWs) network and polyethylene terephthalate (PET) substrate were prepared by a transfer-printing and second pressing technique using different dimensional AgNWs. The performance of the films as a function of optical and bending performances with low sheet resistance is enhanced, by controlling the diameter and length of AgNWs, area density, and the mechanical press condition. With the optimized mean diameter (D) *40 nm and length (L) *15 lm, the asprepared AgNWs-PET film possesses a sheet resistance of 11.5 X/sq, transmittance (T 550 ) of 93.4 %, and haze of 1.23 %. The AgNWs-PET film with the second press treatment at 10 MPa for 20 s shows a very excellent bending performance, with less than 8 % change of the sheet resistance after 46,000 bending cycles without any additional conductive polymer. This highly bendable, transparent, and conductive film is suitable for emerging technologies such as flexible display, electrical skins, and bendable solar cells.

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Section: Resultsmentioning

confidence: 93%

Highly bendable, transparent, and conductive AgNWs-PET films fabricated via transfer-printing and second pressing technique

Jing

Chen

et al. 2015

J Mater Sci

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“…Zhu et al utilized PVP as a capping agent with various MWs (15,000-80,000) and subsequently introduced long-chain PVP to improve the process [98]. Lee et al showed that AgNW diameter can be controlled by varying PVP concentration [99]. Yang et al synthesized AgNWs by a modified polyol process in the PVP concentration range of 4.53-13.75 wt.% to produce AgNWs embedded in PVP fibers [100].…”

Section: Effect Of Pvp Concentration and Molecular Weight As Amentioning

confidence: 99%

“…Lee et al utilized a polyol process in the presence of propylene glycol (PG) as a solvent and a reducing agent, PVP as a capping agent, and 1-butyl-3-methylimidazolium chloride (BMIM-Cl) as a growth controller. They showed that AgNW length can be adjusted by changing the PVP/BMIM-Cl concentration ratio [99]. Zhang et al introduced a new one-pot polyol synthesis by using KBr as a conucleant to NaCl, which is advantageous for AgNW reduction size [107].…”

Section: Effect Of the Salt Mediator In The Polyol Synthesis Ofmentioning

confidence: 99%

Polyol Silver Nanowire Synthesis and the Outlook for a Green Process

Hemmati

Harris

Barkey

2020

Journal of Nanomaterials

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Silver nanowires (AgNWs) have a broad range of applications including nanoelectronics, energy conversion, health care, solar cells, touch screens, sensors and biosensors, wearable electronics, and drug delivery systems. As their characteristics depend strongly on their size and morphology, it is essential to find the optimal and most cost-effective synthesis method with precise control over the size and morphology of the wires. Various methods for AgNW synthesis have been reported along with process optimization and novel techniques to increase the yield and aspect ratios of synthesized AgNWs. The most promising processes for synthesis of AgNWs are wet chemical techniques, in which the polyol process is low cost and simple and provides high yield compared to other chemical methods. Reaction mechanism is one of the most important factors in strategies to control the process. Our purpose here is to provide an overview on the main findings regarding synthesis, preparation, and characterization of AgNWs. Recent efforts in the polyol synthesis of AgNWs are summarized with respect to product morphology and size, reaction conditions, and characterization techniques. The effect of essential factors such as reagent concentration and preparation, temperature, and reaction atmosphere that control the size, morphology, and yield of synthesized AgNWs is reviewed. Moreover, a review on the novel modified polyol process and reactor design such as continuous millifluidic and flow reactors to increase the yield of synthesized AgNWs on large scales is provided. The most recent proposed growth mechanisms and kinetics behind the polyol process are addressed. Finally, comparatively few available studies in green and sustainable development of 1D silver nanostructures through the application of natural products with inherent growth termination, stabilization, and capping characteristics are reviewed to provide an avenue to natural synthesis pathways to AgNWs. Future directions in both chemical and green synthesis approaches of AgNWs are addressed.

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“…However, with the rapidly development of flexible thin-film optoelectronic devices and the inherent brittleness of ITO, great efforts have been made in materials science to develop new highly flexible transparent conductive film (TCF) materials to replace ITO, including carbon nanotubes (CNTs) [2], highly conductive polymers [3,4], reduced graphene oxides (RGOs) [5], printed metal grids [6], and random networks of metallic nanowires [7][8][9]. Among these alternatives, silver nanowires (AgNWs) networks exhibit optoelectronic performances mostly close to that of ITO due to the best intrinsic electrical (6.3 9 10 7 S m -1 ) conductivity of silver and unusual optical properties as one-dimensional nanostructures, thus are regarded as one of the most promising candidate to replace ITO [10].…”

Section: Introductionmentioning

confidence: 99%

A comprehensive study of transparent conductive silver nanowires films with mixed cellulose ester as matrix

Xie

Jun

et al. 2015

J Mater Sci: Mater Electron

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Silver nanowires (AgNWs) with 200-570 nm in diameter and 20-70 lm in length were successfully synthesized by a polyol process. The transparent conductive and flexible AgNWs films were fabricated with using the mixed cellulose eater (MCE) as matrix by the improved vacuum filtration process. Then, the optical and electrical and mechanical properties of the AgNWs-MCE films were investigated. For the AgNWs-MCE film produced with a deposition density of 152 mg m -2 , the optical transmission at 550 nm is 81.98 % with R s around 312 X sq -1 , whereas at a deposition density of 190 mg m -2 an AgNWs-MCE film with an optical transmission of 79.0 % at 550 nm and R s around 16.6 X sq -1 . There is little overt increase in R s of the AgNWS-MCE film after tape tests for 200 times. The bending test indicated that the change in R s of AgNWs-MCE film is less than 8 % even after 200 cycles of compressive or tensile bending. The excellent mechanical properties of the AgNWs-MCE film can be attributed to the burying of the AgNWs film at the surface of MCEs. Two 0.5 W LED lamps with series fixed on the surface of AgNWs-MCE film with conductive adhesive were lighted, and they were still luminous after bent.

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Synthesis of dimension-controlled silver nanowires for highly conductive and transparent nanowire films

Cited by 44 publications

References 31 publications

Highly bendable, transparent, and conductive AgNWs-PET films fabricated via transfer-printing and second pressing technique

Highly bendable, transparent, and conductive AgNWs-PET films fabricated via transfer-printing and second pressing technique

Polyol Silver Nanowire Synthesis and the Outlook for a Green Process

A comprehensive study of transparent conductive silver nanowires films with mixed cellulose ester as matrix

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