Thin and long silver nanowires self-assembled in ionic liquids as a soft template: electrical and optical properties

Chang, Min-Hwa; Cho, Hyun-Ah; Kim, Younsoo; Lee, Eun-Jong; Kim, Jin‐Yeol

doi:10.1186/1556-276x-9-330

Cited by 45 publications

(27 citation statements)

References 29 publications

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“…In this type of crystal, the electron trap distribution (ETD) is uniform and it is more proper to synthesis of silver nanowires with small diameters and high aspect ratio . In addition to synthesize of thin nanowires, the positive effect of the presence of pressure during the reaction and also using an ionic liquid as soft template have been reported …”

Section: Resultsmentioning

confidence: 99%

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Synthesis of Silver Nanowires with Controllable Diameter and Simple Tool to Evaluate their Diameter, Concentration and Yield

Azani¹,

Hassanpour²

2019

ChemistrySelect

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Simple solvothermal method was used to synthesize of uniform silver nanowires with the controllable diameter (17, 20, 35, 70 and 100 nm). It is the first report on the solvothermal synthesis of ultra‐thin silver nanowires (17 nm) with the high aspect ratio (>1000). Knowing silver nanowires diameter, length and yield after synthesis are a critical step to classify them for the final goal. Up to now, although the length of nanowires can be measured with the optical microscope, but to estimate the diameter, costly high‐resolution microscopic techniques are necessary. Herein, UV/Vis spectroscopy as an easy and cost‐effective tool is introduced to evaluate the diameter and yield of nanowires. For this purpose, after synthesis and purification of silver different nanowires; from their UV/Vis spectra, a new equation for evaluation nanowires diameter was extracted. In addition, for the first time, absorption coefficients (ϵ) of nanowires with different diameter thickness were reported and a new equation to estimate absorption coefficients to calculate concentration (mg/ml) and yield of silver nanowires was extracted. These equations have good agreement with real data and are independent of the length of nanowires.

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Section: Resultsmentioning

confidence: 99%

“…It is interesting that the difference in the position of two main peaks ( λ max ‐λ weak ) for all used solvent is the same. According to this point and relation between the position of two main peaks with diameter of nanowires, ( λ max ‐λ weak ) values, extracted from spectra in Figure and inserted in Table .…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Silver Nanowires with Controllable Diameter and Simple Tool to Evaluate their Diameter, Concentration and Yield

Azani¹,

Hassanpour²

2019

ChemistrySelect

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“…Since the transverse localized surface plasmon resonance of thin Ag NWs near ultraviolet (UV) region brings less optical loss at visible range, synthesis of large‐scale ultralong Ag NWs with sub‐30 nm diameter (i.e., resonance near UV region) is highly favorable for transparent electrode application. The recent strategy for shrinking the diameter of Ag NWs generally adopts a mixed additive agent, e.g., Cl − and Br − ions . The reduction of diameter of Ag NWs by introducing Br − ions can be attributed to the increased number of nucleation sites for the growth of Ag NWs and the formation of AgBr which will decrease the reduction speed of Ag + during the growth of Ag NWs .…”

Section: The Front Metal Electrodementioning

confidence: 99%

Emerging Novel Metal Electrodes for Photovoltaic Applications

Ren

Ouyang

et al. 2018

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Emerging novel metal electrodes not only serve as the collector of free charge carriers, but also function as light trapping designs in photovoltaics. As a potential alternative to commercial indium tin oxide, transparent electrodes composed of metal nanowire, metal mesh, and ultrathin metal film are intensively investigated and developed for achieving high optical transmittance and electrical conductivity. Moreover, light trapping designs via patterning of the back thick metal electrode into different nanostructures, which can deliver a considerable efficiency improvement of photovoltaic devices, contribute by the plasmon-enhanced light-mattering interactions. Therefore, here the recent works of metal-based transparent electrodes and patterned back electrodes in photovoltaics are reviewed, which may push the future development of this exciting field.

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“…While low haziness is pursued in the case of displays, such as touch panels or transparent heaters, large haze factors are desirable in solar cells since a large HF leads to an increase in the photon’s optical path, which results in a higher absorption within the active layer of a solar cell [ 62 , 63 ]. Therefore several studies have been devoted to the investigation of the haze values of MNW networks [ 16 , 64 , 65 , 66 , 67 ]. Generally speaking, it is reported that the haziness of a MNW network increases linearly with the network amd for a given MNW size.…”

Section: Modelling Of Mnw Network: a Brief Surveymentioning

confidence: 99%

Transparent Electrodes Based on Silver Nanowire Networks: From Physical Considerations towards Device Integration

et al. 2017

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The past few years have seen a considerable amount of research devoted to nanostructured transparent conducting materials (TCM), which play a pivotal role in many modern devices such as solar cells, flexible light-emitting devices, touch screens, electromagnetic devices, and flexible transparent thin film heaters. Currently, the most commonly used TCM for such applications (ITO: Indium Tin oxide) suffers from two major drawbacks: brittleness and indium scarcity. Among emerging transparent electrodes, silver nanowire (AgNW) networks appear to be a promising substitute to ITO since such electrically percolating networks exhibit excellent properties with sheet resistance lower than 10 Ω/sq and optical transparency of 90%, fulfilling the requirements of most applications. In addition, AgNW networks also exhibit very good mechanical flexibility. The fabrication of these electrodes involves low-temperature processing steps and scalable methods, thus making them appropriate for future use as low-cost transparent electrodes in flexible electronic devices. This contribution aims to briefly present the main properties of AgNW based transparent electrodes as well as some considerations relating to their efficient integration in devices. The influence of network density, nanowire sizes, and post treatments on the properties of AgNW networks will also be evaluated. In addition to a general overview of AgNW networks, we focus on two important aspects: (i) network instabilities as well as an efficient Atomic Layer Deposition (ALD) coating which clearly enhances AgNW network stability and (ii) modelling to better understand the physical properties of these networks.

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Thin and long silver nanowires self-assembled in ionic liquids as a soft template: electrical and optical properties

Cited by 45 publications

References 29 publications

Synthesis of Silver Nanowires with Controllable Diameter and Simple Tool to Evaluate their Diameter, Concentration and Yield

Synthesis of Silver Nanowires with Controllable Diameter and Simple Tool to Evaluate their Diameter, Concentration and Yield

Emerging Novel Metal Electrodes for Photovoltaic Applications

Transparent Electrodes Based on Silver Nanowire Networks: From Physical Considerations towards Device Integration

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