Large-Scale Synthesis and Characterization of Very Long Silver Nanowires via Successive Multistep Growth

Lee, Jin Hwan; Lee, Phillip; Lee, Dongjin; Lee, Seung Seob; Ko, Seung Hwan

doi:10.1021/cg301119d

Cited by 190 publications

(145 citation statements)

References 36 publications

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“…In our case, the aspect ratio is significantly lowered, as shown in the inset of Figure 3(e). On the one end, it can be concluded that stirring during the synthesis lowers the aspect ratio of the resulting nanowires and in turn their performance as a TCE with regard to a high transmittance and a low sheet resistance, as previously reported [35,36]. On the other hand, an increase in haze that is induced by increasing the diameters of the wires was reported to increase the light absorption of thin-film photovoltaic absorbers and thus increase their efficiency [37].…”

Section: Solution-based Synthesis Of Silver Nanowiressupporting

confidence: 61%

“…The chain lengths of the PVP are composed of vinylpyrrolidone monomers with an elemental formula of C 6 H 9 NO. Most studies report the use of PVP with a MW of 40 k [6,30,31], 55 k [29,32,35], 360 k [38,40] as well as 1,3 M [41][42][43]. Song et al [43] and Zhu et al [44] investigated the effect of the MW of PVP on the yield and shape of AgNWs.…”

Section: Solution-based Synthesis Of Silver Nanowiresmentioning

confidence: 99%

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Comprehensive Synthesis Study of Well-Dispersed and Solution-Processed Metal Nanowires for Transparent Heaters

Bobinger

Dergianlis

Becherer

et al. 2018

Journal of Nanomaterials

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We review and extend the numerous polyol-based synthesis protocols and postdeposition treatments that have been reported for silver nanowires (AgNWs). After tailoring substantial process parameters such as the process time, temperature as well as the stirring speed, the polyvinylpyrrolidone (PVP) to silver nitrate (AgNO 3 ) ratio, and the type of PVP, a high mean aspect ratio of 800 could be achieved. Interestingly, the addition of a small portion of potassium chloride (KCl) not only leads to a reduction in diameter but also extremely enhances the nanowire dispersion and its stability. This effect is attributed to the role of KCl, which, along with PVP, acts as a cocapping agent. Furthermore, sprayed AgNW and copper nanowire (CuNW) films were tested as transparent heaters. The AgNWs could be operated at a power density of at least 0.72 W/cm 2 , which corresponds to a temperature of 213 ∘ C, whereas the CuNWs failed at a power density and temperature of 0.4 W/cm 2 and 150 ∘ C, respectively. Interestingly, the degradation of AgNWs shows a step-wise behavior and is mainly dominated by fragmentation, while the CuNWs are gradually oxidized.

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Section: Solution-based Synthesis Of Silver Nanowiressupporting

confidence: 61%

Section: Solution-based Synthesis Of Silver Nanowiresmentioning

confidence: 99%

Comprehensive Synthesis Study of Well-Dispersed and Solution-Processed Metal Nanowires for Transparent Heaters

Bobinger

Dergianlis

Becherer

et al. 2018

Journal of Nanomaterials

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“…Very high-aspect ratio of 1000-3000 with length of over 300 µm and diameter of less than 150 nm were obtained [60].…”

Section: Fabrication Of Silver Nanowiresmentioning

confidence: 95%

Flexible transparent conductive materials based on silver nanowire networks: a review

Langley¹,

Giusti²,

Mayousse³

et al. 2013

Nanotechnology

663

510

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The class of materials combining high electrical or thermal conductivity, optical transparency and flexibility is crucial for the development of many future electronic and optoelectronic devices. Silver nanowire networks show very promising results and represent a viable alternative to the commonly used, scarce and brittle indium tin oxide. The science and technology research of such networks aims at better understanding the physical and chemical properties of this nanowire-based material while opening attractive new applications.

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“…However, thermal annealing has not yet been the subject of a detailed investigation. The impact of thermal annealing on the electrical resistance of metallic NW networks is dominated by desorption of organic residues and local sintering at the junction between neighbouring nanowires, 8,[10][11][12] both of which lead to a significantly lower contact resistance. This is a clear asset of metallic NW network when compared with carbon nanotubes which suffer from high junction resistance between nanotubes.…”

Section: Introductionmentioning

confidence: 99%

Metallic nanowire networks: effects of thermal annealing on electrical resistance

et al. 2014

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a Metallic nanowire networks have huge potential in devices requiring transparent electrodes. This article describes how the electrical resistance of metal nanowire networks evolve under thermal annealing.Understanding the behavior of such films is crucial for the optimization of transparent electrodes which find many applications. An in-depth investigation of silver nanowire networks under different annealing conditions provides a case study demonstrating that several mechanisms, namely local sintering and desorption of organic residues, are responsible for the reduction of the systems electrical resistance. Optimization of the annealing led to specimens with transmittance of 90% (at 550 nm) and sheet resistance of 9.5 Ω sq −1. Quantized steps in resistance were observed and a model is proposed which provides good agreement with the experimental results. In terms of thermal behavior, we demonstrate that there is a maximum thermal budget that these electrodes can tolerate due to spheroidization of the nanowires. This budget is determined by two main factors: the thermal loading and the wire diameter. This result enables the fabrication and optimization of transparent metal nanowire electrodes for solar cells, organic electronics and flexible displays.

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Large-Scale Synthesis and Characterization of Very Long Silver Nanowires via Successive Multistep Growth

Cited by 190 publications

References 36 publications

Comprehensive Synthesis Study of Well-Dispersed and Solution-Processed Metal Nanowires for Transparent Heaters

Comprehensive Synthesis Study of Well-Dispersed and Solution-Processed Metal Nanowires for Transparent Heaters

Flexible transparent conductive materials based on silver nanowire networks: a review

Metallic nanowire networks: effects of thermal annealing on electrical resistance

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