scholarly journals Figures of Merit for High-Performance Transparent Electrodes Using Dip-Coated Silver Nanowire Networks

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Sergio B. Sepulveda-Mora ◽  
Sylvain G. Cloutier
Keyword(s):  
Sheet Resistance ◽  
High Performance ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Dip Coating ◽  
Silver Nanowire ◽  
Figures Of Merit ◽  
The One ◽  
Nanowire Networks ◽  
Dip Coating Technique

Homogeneous, highly conductive, and transparent silver nanowire thin films were fabricated using a simple dip-coating technique and a subsequent annealing step. Silver nanowires with two different average lengths (11 μm and 19 μm) were used in the sample preparation to analyze the dependence of the sheet resistance on the length of the one-dimensional nanostructures. The best sample had a sheet resistance of 10.2 Ω/□with optical transmittance of 89.9%. Two figures of merit, the electrical to optical conductivity ratio(σDC/σOP)andϕTC, were obtained for all the samples in order to measure their performance as transparent conductive materials.

Fabrication of high-performance flexible transparent conductive silver nanowire films using spray coating

2021 ◽  
Vol 35 (06) ◽  
pp. 2150086
Author(s):  
Y. H. Wang ◽  
X. L. Wu ◽  
X. Yang ◽  
H. Xie
Keyword(s):  
Sheet Resistance ◽  
High Performance ◽  
Silver Nanowires ◽  
Spray Coating ◽  
Silver Nanowire ◽  
Pressure Treatment ◽  
Experimental Conditions ◽  
Process Effects ◽  
Coating Method ◽  
Mechanical Bending

Flexible silver nanowires (AgNWs) transparent conductive films (TCFs) were fabricated on poly(ethylene terephthalate) (PET) substrate by using spray coating process. Effects of concentration and amount of AgNWs suspension on the performances of optoelectronics and microstructures of AgNWs TCFs were investigated. The experimental results demonstrate that as the increase of both of concentration and amount of AgNWs suspension, the sheet resistance and nonuniformity factor of the sheet resistance (NUF) and transmittance of AgNWs TCFs decrease and the root mean square (RMS) roughness and figure of merit (FoM) and haze of the AgNWs TCFs increase, respectively, due to the increase of the deposition density of AgNWs on the substrate. The flexible AgNWs TCFs with excellent comprehensive performance, which is a NUF of 0.48, haze of 1.94%, FoM of 148.5, transmittance of 84.5%, and sheet resistance of [Formula: see text], can be obtained under the proper experimental conditions. The pressure treatment can improve the electrical conductivity of AgNWs TCFs due to the increase of contact area and the decrease of contact resistance. AgNWs TCF with pressure treatment also exhibits excellent reliability against mechanical bending over 1000 cycles. Our works demonstrate that flexible AgNWs TCFs with high performance can be obtained by using spray coating method, which is one of the common techniques for preparing coatings or films.

scholarly journals Humidity assisted annealing technique for transparent conductive silver nanowire networks

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19659-19665 ◽  
Author(s):  
Nelli Weiß ◽  
Lars Müller-Meskamp ◽  
Franz Selzer ◽  
Ludwig Bormann ◽  
Alexander Eychmüller ◽  
...  
Keyword(s):  
Water Vapor ◽  
Sheet Resistance ◽  
Silver Nanowires ◽  
Silver Nanowire ◽  
Nanowire Networks

The capacity of polyvinylpyrrolidone (PVP) to adsorb water vapor was used to decrease the sheet resistance of silver nanowires (AgNW) based electrodes.

scholarly journals Scalable Solution-Processed Fabrication Approach for High-Performance Silver Nanowire/MXene Hybrid Transparent Conductive Films

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1360
Author(s):  
Pengchang Wang ◽  
Chi Zhang ◽  
Majiaqi Wu ◽  
Jianhua Zhang ◽  
Xiao Ling ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Silver Nanowires ◽  
Composite Films ◽  
Ambient Air ◽  
Optical Transmittance ◽  
Silver Nanowire ◽  
Solution Processed ◽  
Transparent Conductive Films ◽  
Conductive Films

The transparent conductive films (TCFs) based on silver nanowires are expected to be a next-generation electrode for flexible electronics. However, their defects such as easy oxidation and high junction resistance limit its wide application in practical situations. Herein, a method of coating Ti3C2Tx with different sizes was proposed to prepare silver nanowire/MXene composite films. The solution-processed silver nanowire (AgNW) networks were patched and welded by capillary force effect through the double-coatings of small and large MXene nanosheets. The sheet resistance of the optimized AgNW/MXene TCFs was 15.1 Ω/sq, the optical transmittance at 550 nm was 89.3%, and the figure of merit value was 214.4. Moreover, the AgNW/MXene TCF showed higher stability at 1600 mechanical bending, annealing at 100 °C for 50 h, and exposure to ambient air for 40 days. These results indicate that the novel AgNW/MXene TCFs have a great potential for high-performance flexible optoelectronic devices.

Conductivity Improvement of Silver Nanowire Transparent Electrodes by Surface Plasma Treatment

2017 ◽  
Vol 890 ◽  
pp. 89-92 ◽  
Author(s):  
Nathaniel de Guzman ◽  
Joybelle Lopez ◽  
Magdaleno Vasquez Jr. ◽  
Mary Donnabelle Balela
Keyword(s):  
Plasma Treatment ◽  
Sheet Resistance ◽  
Treatment Time ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Silver Nanowire ◽  
Transparent Electrodes ◽  
Glass Substrates ◽  
Plasma Treatment Time ◽  
Transparent Conducting Electrodes

High aspect ratio silver nanowires (Ag NWs) were successfully synthesized by CuCl2-mediated synthesis. Scanning electron microscopy (SEM) and X-Ray diffraction were employed to investigate the morphology and structure of the Ag products, respectively. Suspensions of Ag NW in ethanol were coated on glass substrates by Meyer rod coating to fabricate transparent conducting electrodes (TCE’s). The electrodes were then plasma treated at a power of 75 W. The effects of increasing plasma treatment time and oxygen exposure on the sheet resistance of the transparent electrodes were investigated. A sheet resistance of 8 Ω/sq with an optical transmittance of 80 % at 550nm was obtained for an electrode with a nanowire density of 0.18 mg/cm2 after 5 mins of plasma (Ar) exposure.

scholarly journals Radio Frequency Induction Welding of Silver Nanowire Networks for Transparent Heat Films

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4448
Author(s):  
Jisoo Oh ◽  
Long Wen ◽  
Hyunwoo Tak ◽  
Heeju Kim ◽  
Gyowun Kim ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Silver Nanowire ◽  
Welding Condition ◽  
Bending Resistance ◽  
Higher Power ◽  
S 100 ◽  
Improved Stability ◽  
Nanowire Networks

Transparent heat films (THFs) are attracting increasing attention for their usefulness in various applications, such as vehicle windows, outdoor displays, and biosensors. In this study, the effects of induction power and radio frequency on the welding characteristics of silver nanowires (Ag NWs) and Ag NW-based THFs were investigated. The results showed that higher induction frequency and higher power increased the welding of the Ag NWs through the nano-welding at the junctions of the Ag NWs, which produced lower sheet resistance, and improved the adhesion of the Ag NWs. Using the inductive welding condition of 800 kHz and 6 kW for 60 s, 100 ohm/sq of Ag NW thin film with 95% transmittance at 550 nm after induction heating could be decreased to 56.13 ohm/sq, without decreasing the optical transmittance. In addition, induction welding of the Ag NW-based THFs improved haziness, increased bending resistance, enabled higher operating temperature at a given voltage, and improved stability.

scholarly journals Effects of Concentration and Spin Speed on the Optical and Electrical Properties of Silver Nanowire Transparent Electrodes

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2219
Author(s):  
Xiaopeng Li ◽  
Jiayue Zhou ◽  
Dejun Yan ◽  
Yong Peng ◽  
Yong Wang ◽  
...  
Keyword(s):  
Sheet Resistance ◽  
Spin Coating ◽  
Figure Of Merit ◽  
Silver Nanowires ◽  
Solution Concentration ◽  
Ethanol Solution ◽  
Silver Nanowire ◽  
Optical And Electrical Properties ◽  
Transparent Electrodes ◽  
Spin Speed

In this paper, silver nanowires (AgNWs) with a diameter of 40 nm and a length of 45 μm were dispersed into an ethanol solution to prepare AgNW solutions with concentrations of 1, 2, and 3 mg/mL, respectively. The AgNW solutions were then deposited on a glass substrate using spin-coating at 1000, 2000, and 3000 rpm for 45 s, respectively, to prepare transparent electrodes. The results showed that the distribution of AgNWs on the substrate increased in density with the increase in the AgNW solution concentration and the decrease in spin speed. The effect of concentration on the distribution of AgNWs was greater than that of the spin speed. The transmittance of each electrode was between 84.19% and 88.12% at 550 nm, the average sheet resistance was between 20.09 and 358.11 Ω/sq, the highest figure of merit (FoM) was 104.42, and the lowest haze value was 1.48%. The electrode prepared at 1000 rpm with a concentration of 2 mg/mL and that prepared at 3000 rpm with a concentration of 3 mg/mL were very similar in terms of the average sheet resistance, transmittance at 550 nm, FoM, and haze value; thus, these two electrodes could be considered equivalent. The haze value of the electrode was positively correlated with the spin speed at low concentration, but that relationship became inverse as the concentration rose. For the AgNWs used in this experiment with an aspect ratio of 1125, the concentration of the AgNW solution should reach at least 2 mg/mL to ensure that the FoM of the electrode is greater than 35.

Order-enhanced silver nanowire networks fabricated by two-step dip-coating as polymer solar cell electrodes

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100725-100729 ◽  
Author(s):  
Danfeng Pu ◽  
Weixin Zhou ◽  
Yi Li ◽  
Jun Chen ◽  
Jianyu Chen ◽  
...  
Keyword(s):  
Solar Cell ◽  
Electrical Properties ◽  
Polymer Solar Cell ◽  
Dip Coating ◽  
Silver Nanowire ◽  
Optical And Electrical Properties ◽  
Efficient Utilization ◽  
Layer Stacking ◽  
Nanowire Networks ◽  
Transparent Conductive Electrodes

The efficient utilization of Ag NW by avoiding their aggregation and multi-layer stacking in their networks can improve the optical and electrical properties of the derived transparent conductive electrodes (TCEs).

Fabrication of Uniformly Growing Graphene Films via the Dip-Coating Method

2013 ◽  
Vol 320 ◽  
pp. 185-189
Author(s):  
Juan Yang ◽  
Hong Bo Sun ◽  
Dan Li
Keyword(s):  
Sheet Resistance ◽  
Photoelectron Spectroscopy ◽  
Dip Coating ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Graphene Films ◽  
Coating Method ◽  
Dip Coating Method ◽  
Dip Coating Technique

The graphene (GE) films were fabricated in this paper through the deposition of graphene oxide (GO) sheets onto the quartz slide by means of dip-coating technique, followed by thermal annealing. The growth process and transmittance of the film were monitored by ultraviolet and visible spectrophotometer (UV-Vis), the surface morphology and structure were investigated by Atomic force microscopy (AFM), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman. The sheet resistance of the film was also tested and results showed that the sheet resistance is about 60 kΩ-1and the transmittance is as high as 81 % (at 550 nm).

Optical and Electrical Properties of Transparent Conduction ITO Films Prepared by Dip-Coating Process

2006 ◽  
Vol 11-12 ◽  
pp. 171-174
Author(s):  
Sheng Jie Piao ◽  
Jia Xiang Liu ◽  
Nan Zhang
Keyword(s):  
Sheet Resistance ◽  
Soda Lime ◽  
Heat Treating ◽  
Dip Coating ◽  
Float Glass ◽  
X Ray Diffraction ◽  
Ito Film ◽  
Dip Coating Technique ◽  
Resistance Value ◽  
Ito Films

Transparent conductive ITO films were fabricated on soda lime float glass substrate by colloid dip-coating technique from indium metal ingots and hydrous tin(IV) chloride. It was systematically studied that the effect of the electrical, the structure and optical properties of the ITO doped Sn in quantitative change and different heat-treating process by XRD, UV-VIS spectrophotometer and four-probe instrument. The results indicated that only cubic In2O3 phase was observed from the X-ray diffraction; with the amount of doped Snincreasing, the sheet resistance of ITO was up to minimumand thenincreased. The sheet resistance value decreased with the increase of the annealing temperature and holding time; the transmissivity of the ITO films was higher than 80% in 550 nm wavelength. The lowest sheet resistance value of ITO film which was 300nm thick was 153 ohms per square, which wasannealed at 600°C for 1h and doped Sn 10% (wt).

scholarly journals Copercolating Networks: An Approach for Realizing High-Performance Transparent Conductors using Multicomponent Nanostructured Networks

Nanophotonics ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 180-195 ◽  
Author(s):  
Suprem R. Das ◽  
Sajia Sadeque ◽  
Changwook Jeong ◽  
Ruiyi Chen ◽  
Muhammad A. Alam ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Indium Tin Oxide ◽  
High Performance ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Single Component ◽  
Transparent Conductors ◽  
Hybrid Networks ◽  
Gold Nanowires ◽  
Metallic Nanowire Networks

Abstract Although transparent conductive oxides such as indium tin oxide (ITO) are widely employed as transparent conducting electrodes (TCEs) for applications such as touch screens and displays, new nanostructured TCEs are of interest for future applications, including emerging transparent and flexible electronics. A number of twodimensional networks of nanostructured elements have been reported, including metallic nanowire networks consisting of silver nanowires, metallic carbon nanotubes (m-CNTs), copper nanowires or gold nanowires, and metallic mesh structures. In these single-component systems, it has generally been difficult to achieve sheet resistances that are comparable to ITO at a given broadband optical transparency. A relatively new third category of TCEs consisting of networks of 1D-1D and 1D-2D nanocomposites (such as silver nanowires and CNTs, silver nanowires and polycrystalline graphene, silver nanowires and reduced graphene oxide) have demonstrated TCE performance comparable to, or better than, ITO. In such hybrid networks, copercolation between the two components can lead to relatively low sheet resistances at nanowire densities corresponding to high optical transmittance. This review provides an overview of reported hybrid networks, including a comparison of the performance regimes achievable with those of ITO and single-component nanostructured networks. The performance is compared to that expected from bulk thin films and analyzed in terms of the copercolation model. In addition, performance characteristics relevant for flexible and transparent applications are discussed. The new TCEs are promising, but significant work must be done to ensure earth abundance, stability, and reliability so that they can eventually replace traditional ITO-based transparent conductors.

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