scholarly journals Novel Hybrid Conductor of Irregularly Patterned Graphene Mesh and Silver Nanowire Networks

Micromachines ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 578 ◽  
Author(s):  
Hiesang Sohn ◽  
Weon Shin ◽  
Dohyeong Seok ◽  
Taek Lee ◽  
Chulhwan Park ◽  
...  
Keyword(s):  
Optical Properties ◽  
Treatment Time ◽  
Optical Transmittance ◽  
Hybrid Structure ◽  
Silver Nanowire ◽  
Bottom Side ◽  
Nanowire Networks ◽  
Chemical Etchant ◽  
Ag Nanowire ◽  
Hybrid Conductor

We prepared the hybrid conductor of the Ag nanowire (NW) network and irregularly patterned graphene (GP) mesh with enhanced optical transmittance (~98.5%) and mechano-electric stability (ΔR/Ro: ~42.4% at 200,000 (200k) cycles) under 6.7% strain. Irregularly patterned GP meshes were prepared with a bottom-side etching method using chemical etchant (HNO3). The GP mesh pattern was judiciously and easily tuned by the regulation of treatment time (0–180 min) and concentration (0–20 M) of chemical etchants. As-formed hybrid conductor of Ag NW and GP mesh exhibit enhanced/controllable electrical-optical properties and mechano-electric stabilities; hybrid conductor exhibits enhanced optical transmittance (TT = 98.5%) and improved conductivity (ΔRs: 22%) compared with that of a conventional hybrid conductor at similar TT. It is also noteworthy that our hybrid conductor shows far superior mechano-electric stability (ΔR/Ro: ~42.4% at 200k cycles; TT: ~98.5%) to that of controls (Ag NW (ΔR/Ro: ~293% at 200k cycles), Ag NW-pristine GP hybrid (ΔR/Ro: ~121% at 200k cycles)) ascribed to our unique hybrid structure.

Photo-induced fabrication of Ag nanowire circuitry for invisible, ultrathin, conformable pressure sensors

2017 ◽  
Vol 5 (38) ◽  
pp. 9986-9994 ◽  
Author(s):  
Chul Jong Han ◽  
Bum-Geun Park ◽  
Min Suk Oh ◽  
Seung-Boo Jung ◽  
Jong-Woong Kim
Keyword(s):  
Polyethylene Terephthalate ◽  
Pressure Sensors ◽  
Silver Nanowire ◽  
Pressure Sensitive ◽  
Nanowire Networks ◽  
Ag Nanowire

An ultrathin, transparent and stretch-compatible (up to 100% strain) pressure sensitive capacitor was achieved by developing a novel photo-induced patterning of silver nanowire networks deposited on a 1.4 μm thick polyethylene terephthalate sheet.

Enhancing the optical transmittance by using circular silver nanowire networks

2014 ◽  
Vol 115 (19) ◽  
pp. 193102 ◽  
Author(s):  
Shouyi Xie ◽  
Zi Ouyang ◽  
Nicholas Stokes ◽  
Baohua Jia ◽  
Min Gu
Keyword(s):  
Optical Transmittance ◽  
Silver Nanowire ◽  
Nanowire Networks

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 Improvement of Electro-Optical Properties of PSLC Devices by Silver Nanowire Doping

2019 ◽  
Vol 9 (1) ◽  
pp. 145 ◽  
Author(s):  
Xudong Yan ◽  
Wei Liu ◽  
Yong Zhou ◽  
Dong Yuan ◽  
Xiaowen Hu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Response Time ◽  
Frequency Modulation ◽  
Silver Nanowire ◽  
Driving Voltage ◽  
State Response ◽  
Ag Nanowires ◽  
20 Nm ◽  
Polymer Stabilized ◽  
Ag Nanowire

Polymer stabilized liquid crystal (PSLC) devices modulating the light that goes through them have broad applications. In this study, to improve the electro-optical properties of a PSLC device, Ag nanowires with diameter about 20 nm were doped into PSLC active layer with different concentrations. The influence of Ag nanowires concentration on the driving voltage, on-state response time and frequency modulation characteristics of a PSLC device were studied. The results indicate that the doping of Ag nanowires can reduce the driving voltage of PSLC cell up to 42%. The response time of the PSLC cell can decrease by about 41%. Meanwhile, frequency modulation does not show significant improvement upon Ag nanowire doping. Overall, Ag nanowire doping can improve the electro-optical properties of PSLC device effectively.

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.

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.

Floating compression of Ag nanowire networks for effective strain release of stretchable transparent electrodes

Nanoscale ◽  
2015 ◽  
Vol 7 (39) ◽  
pp. 16434-16441 ◽  
Author(s):  
Jun Beom Pyo ◽  
Byoung Soo Kim ◽  
Hyunchul Park ◽  
Tae Ann Kim ◽  
Chong Min Koo ◽  
...  
Keyword(s):  
Effective Strain ◽  
Silver Nanowire ◽  
Transparent Electrodes ◽  
Strain Release ◽  
Nanowire Networks ◽  
Ag Nanowire

Silver nanowire networks with wavy configurations prepared by floating compression offer key benefits in application of stretchable transparent electrodes.

Influence of polyvinylpyrrolidone (PVP) capping layer on silver nanowire networks: theoretical and experimental studies

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 30972-30977 ◽  
Author(s):  
Jinyoung Hwang ◽  
Youngseon Shim ◽  
Seon-Mi Yoon ◽  
Sang Hyun Lee ◽  
Sung-Hoon Park
Keyword(s):  
Molecular Dynamics ◽  
Monte Carlo ◽  
Optical Properties ◽  
Monte Carlo Simulations ◽  
Layer Thickness ◽  
Experimental Studies ◽  
Silver Nanowire ◽  
Electrical And Optical Properties ◽  
Capping Layer ◽  
Nanowire Networks

By adjusting the polyvinylpyrrolidone (PVP) capping layer thickness on silver nanowire networks, improved electrical and optical properties were obtained, which was confirmed both experimentally and theoretically (Molecular dynamics and Monte Carlo simulations).

scholarly journals UV-A Treatment of ZrO2 Thin Films Fabricated by Environmental Friendlier Water-Based Solution Processing: Structural and Optical Studies

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 821
Author(s):  
Aneeqa Bashir ◽  
Mehwish Farooq ◽  
Abdul Malik ◽  
Shahzad Naseem ◽  
Arshad Saleem Bhatti
Keyword(s):  
Optical Properties ◽  
Low Cost ◽  
Annealed Film ◽  
Optical Transmittance ◽  
Amorphous Structure ◽  
Solution Processing ◽  
Vis Spectroscopy ◽  
Water Based ◽  
Free Films ◽  
Quartz Substrates

An environmentally friendlier solution processing has been introduced to fabricate zirconium oxide (ZrO2) films on quartz substrates, using spin coating of simple water-based solution. The films cured with UV-A = 330 nm for different times (40, 80, 120 min) were investigated for structural and optical properties and compared with thermally annealed film (at 350 °C). XRD and Raman spectroscopy showed amorphous structure in all the samples with no significant phase transformation with UV-A exposure. AFM microscopy showed smooth and crack free films with surface roughness ≤2 nm that reduced with UV-A exposure. Ultraviolet-visible (UV–Vis) spectroscopy demonstrated optical transmittance ≥88% and energy band gap variations as 4.52–4.70 eV. Optical constants were found from spectroscopic ellipsometry (SE). The refractive index (n) values, measured at 470 nm increased from 1.73 to 2.74 as the UV-A exposure prolonged indicating densification and decreasing porosity of the films. The extinction coefficient k decreased from 0.32 to 0.19 indicating reduced optical losses in the films under the UV-A exposure. The photoluminescence (PL) spectra exhibited more pronounced UV emissions which grew intense with UV-A exposure thereby improving the film quality. It is concluded that UV-A irradiation can significantly enhance the optical properties of ZrO2 films with minimal changes induced in the structure as compared to thermally treated film. Moreover, the present work indicates that water-based solution processing has the potential to produce high-quality ZrO2 films for low cost and environmental friendlier technologies. The work also highlights the use of UV-A radiations as an alternate to high temperature thermal annealing for improved quality.

scholarly journals Adhesive aero-hydrogel hybrid conductor assembled from silver nanowire architectures

2021 ◽  
Author(s):  
Zhao Pan ◽  
Ze-Yu Wang ◽  
Mo-Han Wang ◽  
Lu Yang ◽  
Shu-Hong Yu
Keyword(s):  
Silver Nanowire ◽  
Hybrid Conductor
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