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.

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 Fabrication and Investigating the Electrical and Optical Properties of Silver Nanowire/Indium Tin Oxide Transparent Conductive Electrodes  

2021 ◽  
Vol 31 (3) ◽  
pp. 58-62
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Figure Of Merit ◽  
Silver Nanowires ◽  
Silver Nanowire ◽  
Optical And Electrical Properties ◽  
Electrical And Optical Properties ◽  
Transparent Conductive Electrode ◽  
Direct Current Sputtering ◽  
Transparent Conductive Electrodes

In this study, we analyze the optical and electrical properties of silver nanowires/indium tin oxide transparent conductive electrode (TCE). Silver nanowire was synthesized by polyol method. ITO was deposited by direct-current sputtering. The diameter and length of the synthesized silver nanowire are in the range of 40-70 nm and 5-30 μm, respectively. The silver nanowire TCEs have a rather high resistance (~ 210 Ω /). After a layer of indium tin oxide sputtered on silver nanowire TCE, the resistance dropped sharply (~ 30.1 Ω/◻) corresponding to 84.1% transmittance at 550 nm. The figure of merit of this TCE is 68.3. This result shows that the fabricated silver naowire/indium tin oxide TCEs have great potential in application as window electrodes for solar cells and LED devices.

Low temperature processed graphene thin film transparent electrodes for supercapacitor applications

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78702-78713 ◽  
Author(s):  
Shriniwas Yadav ◽  
Inderpreet Kaur
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Sheet Resistance ◽  
Spin Coating ◽  
Low Temperatures ◽  
Functionalized Graphene ◽  
Transparent Electrodes ◽  
Thin Film Electrodes ◽  
Supercapacitor Applications

A highly conducting graphene thin film electrodes with remarkable sheet resistance of the order of 0.4 kΩ sq.−1and transmittance up to 94% using spin coating of functionalized graphene solution fabricated at low temperatures of the order of 150 °C.

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.

Highly flexible transparent electrodes using a silver nanowires-embedded colorless polyimide film via chemical modification

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30331-30336 ◽  
Author(s):  
Dasom Lee ◽  
Doo-Young Youn ◽  
Zhenhao Luo ◽  
Il-Doo Kim
Keyword(s):  
Chemical Modification ◽  
Sheet Resistance ◽  
Silver Nanowires ◽  
Polyimide Film ◽  
Optical Transparency ◽  
Transparent Electrodes ◽  
Flexible Transparent Electrodes

AgNWs-embedded colorless polyimide encapsulated by a ZnO layer via chemical modification of a CPI film. The ZnO/AgNWs-embedded CPI substrate exhibited a low sheet resistance of 24 Ω sq−1 while maintaining a high optical transparency of 81%.

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 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.

scholarly journals Flexible transparent electrodes based on silver nanowires synthesized via a simple method

2017 ◽  
Vol 4 (9) ◽  
pp. 170756 ◽  
Author(s):  
De Li ◽  
Tao Han ◽  
Lei Zhang ◽  
Huai Zhang ◽  
Hui Chen
Keyword(s):  
Silver Nanowires ◽  
Cost Effective ◽  
Silver Nanowire ◽  
Vinyl Pyrrolidone ◽  
High Yield ◽  
Transparent Electrodes ◽  
X Ray Diffraction ◽  
Simple Method ◽  
Uv Visible ◽  
Poly Vinyl Pyrrolidone

Silver nanowires (Ag NWs) with the length of approximately 60 µm and the diameter of approximately 300 nm are prepared via a simple, cost-effective, high-yield and eco-friendly procedure under a high molar concentration ratio of silver nitrate (AgNO 3 ) solution to poly(vinyl pyrrolidone) solution. The pre-synthesized Ag NWs were analysed by scanning electron microscopy, X-ray diffraction and UV–visible spectrophotometer. Furthermore, the as-prepared silver nanowires were roll-coated on the surfaces of the polyethylene terephthalate (PET) substrates. By optimizing the concentration of silver nanowire solution, the flexible Ag NW/PET transparent electrodes with a sheet resistance of 3.8 Ω sq −1 at a transmittance of 70% can be fabricated. The results reported in this paper provide a basis for optimizing the growth of silver nanowires and performances of transparent electrodes.

scholarly journals Highly Transparent Conducting Electrodes Based on a Grid Structure of Silver Nanowires

Coatings ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 30
Author(s):  
Jinseon You ◽  
Sung Min Lee ◽  
Hong-Sik Eom ◽  
Suk Tai Chang
Keyword(s):  
Sheet Resistance ◽  
Indium Tin Oxide ◽  
Figure Of Merit ◽  
Isopropyl Alcohol ◽  
Uv Light ◽  
Silver Nanowires ◽  
Deposition Process ◽  
Grid Structure ◽  
Transparent Conducting ◽  
Transparent Conducting Electrodes

Transparent conducting electrodes (TCEs) formed with silver nanowires (AgNWs) have attracted attention as substitutes for indium tin oxide (ITO). However, the randomly deposited AgNW film performs poorly in terms of the transmittance and sheet resistance to serve as a substitute of ITO. To improve the performance of the AgNW film, we fabricated a grid-patterned AgNW by modifying the surface energy of the substrate. The hydrophobized surface was selectively etched by UV light through a quartz chrome mask, and a suspension of AgNWs in isopropyl alcohol/ethylene glycol mixture was coated on the substrate by a meniscus dragging deposition process. The grid-patterned AgNW film has a lower percolation threshold and a 13% higher figure-of-merit value compared to the randomly deposited AgNW film. The transparent thin films with a grid structure of AgNWs exhibit the high electrical conductivity with a sheet resistance of 33 Ohm/sq at a transmittance of 92.7% (λ = 550 nm).

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