High-performance flexible transparent electrode films based on silver nanowire-PEDOT:PSS hybrid-gels

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64428-64433 ◽  
Author(s):  
Youn-Soo Kim ◽  
Eun-Jong Lee ◽  
Jun-Taek Lee ◽  
Do-Kyung Hwang ◽  
Won-Kook Choi ◽  
...  
Keyword(s):  
High Performance ◽  
Silver Nanowires ◽  
Transparent Electrode ◽  
Silver Nanowire ◽  
Electrical Performance ◽  
Transparent Conductive Electrode ◽  
Hybrid Gels ◽  
Hybrid Gel ◽  
20 Nm

We have developed the transparent conductive electrode hybrid-gel films based on PEDOT:PSS and thin silver nanowires with diameters of 20 nm. These hybrid-gel films exhibited excellent opto-electrical performance and good mechanical flexibility.

scholarly journals Transparent and flexible ECoG electrode arrays based on silver nanowire networks for neural recordings

2020 ◽  
Author(s):  
Joana P. Neto ◽  
Adriana Costa ◽  
Joana Vaz Pinto ◽  
André Marques–Smith ◽  
Júlio Costa ◽  
...  
Keyword(s):  
High Performance ◽  
Silver Nanowires ◽  
Low Cost ◽  
Electrical Potential ◽  
Hybrid Structure ◽  
Silver Nanowire ◽  
Electrode Arrays ◽  
Hybrid Films ◽  
A Charge

AbstractThis work explored hybrid films of silver nanowires (AgNWs) with indium-doped zinc oxide (IZO) for developing high-performance and low-cost electrocorticography (ECoG) electrodes.The hybrid films achieved a sheet resistance of 6 Ω/sq while maintaining a transparency of ≈60% at 550 nm. Electrodes with 500 μm diameter were fabricated with these films and reached an impedance of 20 kΩ at 1 kHz and a charge storage capacity of 3.2 mC/cm2, a 2× and 320× improvement over IZO electrodes, respectively. Characterization of light-induced artifacts was performed showing that small light intensities (<14 mW/mm2) elicit electrical potential variation in the magnitude order of baseline noise. The validation of electrodes in vivo was achieved by recording electrical neural activity from the surface of rat cortex under anaesthesia. Moreover, the presence of the films did not cause obstruction of light during fluorescence microscopy.The presented film and electrode characterization studies highlighted the capabilities of this hybrid structure to fabricate transparent and flexible electrodes that are able to combine the superior temporal resolution of extracellular electrophysiology with the spatial resolution offered by optical imaging.

scholarly journals Promising Hybrid Graphene-Silver Nanowire Composite Electrode for Flexible Organic Light-Emitting Diodes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Huiying Li ◽  
Yunfei Liu ◽  
Anyang Su ◽  
Jintao Wang ◽  
Yu Duan
Keyword(s):  
Grain Boundaries ◽  
Carrier Concentration ◽  
Silver Nanowires ◽  
Light Emitting Diode ◽  
Silver Nanowire ◽  
Single Layer Graphene ◽  
Transparent Conductive Electrode ◽  
Vacancy Defects ◽  
Light Emitting ◽  
Organic Light

AbstractThanks to its high transparency, high carrier mobility, and thermal conductivity, graphene is often used as transparent conductive electrode (TCE) in optoelectronic devices. However, the low carrier concentration and high resistance caused by vacancy defects, grain boundaries, and superposed folds in typical graphene films limit its application. In this study, we propose a method to increase both the conductivity and carrier concentration in single-layer graphene (SLG) by blending it with silver nanowires (AgNWs). AgNWs provide connections between grain boundaries of graphene to improve charge-carrier transport. The AgNWs in this study can reduce the resistance of SLG from 650 Ω/◻ to 27 Ω/◻ yet still maintain a transmittance of 86.7% (at 550 nm). Flexible organic light-emitting diode, with a maximum 15000 cd m−2 luminance was successfully fabricated using such graphene and AgNWs composite transparent electrodes.

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 Synergistic Effect of Graphene/Silver Nanowire Hybrid Fillers on Highly Stretchable Strain Sensors Based on Spandex Composites

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2063
Author(s):  
Tan Thong Vo ◽  
Hyeon-Jong Lee ◽  
Sang-Yun Kim ◽  
Ji Won Suk
Keyword(s):  
Synergistic Effect ◽  
High Performance ◽  
Silver Nanowires ◽  
Large Strain ◽  
Strain Range ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Gauge Factor ◽  
Hybrid Fillers ◽  
Conductive Nanomaterials

Embedding conductive nanomaterials into elastomeric polymer matrices is one of the most promising approaches for fabricating stretchable strain sensors capable of monitoring large mechanical movements or deformation through the detection of resistance changes. Here, hybrid fillers comprising graphene and silver nanowires (AgNWs) are incorporated into extremely stretchable spandex to fabricate strain sensors. Composites containing only graphene and those containing the graphene/AgNW hybrid fillers are systematically investigated by evaluating their electrical and mechanical properties. The synergistic effect between graphene and AgNWs enable the strain sensors based on the composites to experience a large strain range of up to 120%, and low hysteresis with a high gauge factor of 150.3 at a strain of 120%. These reliable strain sensors are utilized for monitoring human motions such as heartbeats and body movements. The findings of this study indicate the significant applicability of graphene/AgNW/spandex composites in future applications that demand high-performance stretchable strain sensors.

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 Long-Term Electrically Stable Silver Nanowire Composite Transparent Electrode Under High Current Density

2021 ◽  
Author(s):  
Kaiqing Wang ◽  
Yunxia Jin ◽  
Fei Xiao
Keyword(s):  
Current Density ◽  
Composite Electrode ◽  
High Current Density ◽  
Transparent Electrode ◽  
Silver Nanowire ◽  
Electrical Performance ◽  
High Current ◽  
Electrical Stability ◽  
Current Stress

Abstract Silver nanowire (AgNW) network has been employed to many electronic devices as transparent electrode. However, the poor electrical stability under current has been seriously holding its practical application, and we still lack long-term electrically stable AgNW system to study the underlying fundamental of electrical failure. In this work, the electrical performance and failure mechanism of chitosan-ascorbic acid (Chi-AsA)/AgNW composite under current stress were thoroughly studied. The composite electrode maintained stability above 24000 h under high current density of 100 mA cm-1. The main failure in AgNW composite is found to be a wave break perpendicular to the current rather than traditional uniform degradation across AgNW networks. More interestingly, the AgNWs in failed composite electrode kept their original smooth morphology excepting the crack area, while the AgNWs in pristine networks degraded to nanoparticles or became disconnected everywhere. The patterned AgNW composite in microscale exhibits similar long lifetime in resisting current stress as the bulk composite film. The effect of over-coating position, electrical stress, temperature and over-coating materials on the electrical stability were studied. The over-coating layer of Chi-AsA is proven to suppress the silver atoms from migration, reduce the concentrated Joule heating at junctions, and inhibit the corrosion. The Chi-AsA/AgNW composite enables electrically stable transparent conductor for next-generation optoelectronics, and the mechanism investigation may provide effective means of preparing electrically stable AgNW systems.

Flexible Cellulose-Based Films of Polyaniline–Graphene–Silver Nanowire for High-Performance Supercapacitors

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Ali Khosrozadeh ◽  
Mohammad Ali Darabi ◽  
Malcolm Xing ◽  
Quan Wang
Keyword(s):  
Composite Film ◽  
High Performance ◽  
Silver Nanowires ◽  
Discharge Rate ◽  
Rate Capability ◽  
Silver Nanowire ◽  
Binding Effect ◽  
Capacitive Behavior ◽  
Reduced Graphene ◽  
Facile Fabrication

We report a facile fabrication of a high-performance supercapacitor (SC) using a flexible cellulose-based composite film of polyaniline (PANI), reduced graphene oxide (RGO), and silver nanowires (AgNWs). The flexibility, high capacitive behavior, cyclic stability, and enhanced rate capability of the entire device make it a good candidate for flexible and wearable SCs. Our results demonstrate that a capacitance as high as 73.4 F/g (1.6 F/cm2) at a discharge rate of 1.1 A/g is achieved. In addition, the SC shows a power density up to 468.8 W/kg and an energy density up to 5.1 Wh/kg. The flexibility of the composite film is owing to the binding effect of cellulose fibers as well as AgNWs. The superb electrochemical performance of the device is found to be mainly attributed to the synergistic effect between PANI/RGO/AgNWs ternary in a cushiony cellulose scaffold and porous structure of the composite.

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.

scholarly journals High-Stability Silver Nanowire–Al2O3 Composite Flexible Transparent Electrodes Prepared by Electrodeposition

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3047
Author(s):  
Honglong Ning ◽  
Junlong Chen ◽  
Zhihang Li ◽  
Zhuohui Xu ◽  
Rihui Yao ◽  
...  
Keyword(s):  
Indium Tin Oxide ◽  
High Stability ◽  
Composite Films ◽  
Amorphous State ◽  
Transparent Electrode ◽  
Silver Nanowire ◽  
Electrical Performance ◽  
Transparent Electrodes ◽  
Al2o3 Composite ◽  
Flexible Transparent Electrodes

Silver nanowire (AgNW) conductive film fabricated by solution processing was investigated as an alternative to indium tin oxide (ITO) in flexible transparent electrodes. In this paper, we studied a facile and effective method by electrodepositing Al2O3 on the surface of AgNWs. As a result, flexible transparent electrodes with improved stability could be obtained by electrodepositing Al2O3. It was found that, as the annealing temperature rises, the Al2O3 coating layer can be transformed from Al2O3·H2O into a denser amorphous state at 150 °C. By studying the increase of electrodeposition temperature, it was observed that the transmittance of the AgNW–Al2O3 composite films first rose to the maximum at 70 °C and then decreased. With the increase of the electrodeposition time, the figure of merit (FoM) of the composite films increased and reached the maximum when the time was 40 s. Through optimizing the experimental parameters, a high-stability AgNW flexible transparent electrode using polyimide (PI) as a substrate was prepared without sacrificing optical and electrical performance by electrodepositing at −1.1 V and 70 °C for 40 s with 0.1 mol/L Al(NO3)3 as the electrolyte, which can withstand a high temperature of 250 °C or 250,000 bending cycles with a bending radius of 4 mm.

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