scholarly journals Biodegradable, Flexible, and Transparent Conducting Silver Nanowires/Polylactide Film with High Performance for Optoelectronic Devices

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 604 ◽  
Author(s):  
Junjun Wang ◽  
Junsheng Yu ◽  
Dongyu Bai ◽  
Zhuobin Li ◽  
Huili Liu ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Flexible Electronics ◽  
High Performance ◽  
Silver Nanowires ◽  
Low Cost ◽  
Electronic Waste ◽  
Hydrolytic Degradation ◽  
Optoelectronic Devices ◽  
Light Emitting ◽  
Transfer Method

As a synthetic renewable and biodegradable material, the application of polylactide (PLA) in the green flexible electronics has attracted intensive attention due to the increasingly serious issue of electronic waste. Unfortunately, the development of PLA-based optoelectronic devices is greatly hindered by the poor heat resistance and mechanical property of PLA. To overcome these limitations, herein, we report a facile and promising route to fabricate silver nanowires/PLA (AgNW/PLA) film with largely improved properties by utilizing the stereocomplex (SC) crystallization between poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA). Through embedding the AgNW networks into the PLLA:PDLA blend matrix via a transfer method, the AgNW/PLLA:PDLA film with both high transparency and excellent conductivity was obtained. Compared with the AgNW/PLLA film, the formation of SC crystallites in the composites matrix could significantly enhance not only heat resistance but also mechanical strength of the AgNW/PLLA:PDLA film. Exceptionally, the AgNW/PLLA:PDLA film exhibited superior flexibility and could maintain excellent electrical conductivity stability even under the condition of 10,000 repeated bending cycles and 100 tape test cycles. In addition, the organic light-emitting diodes (OLEDs) with the AgNW/PLLA:PDLA films as electrodes were successfully fabricated in this work for the first time and they exhibited highly flexible, luminous, as well as hydrolytic degradation properties. This work could provide a low-cost and environment-friendly avenue towards fabricating high-performanced PLA-based biodegradable electronics.

scholarly journals Recent Advances in Natural Functional Biopolymers and Their Applications of Electronic Skins and Flexible Strain Sensors

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 813
Author(s):  
Ziying Wang ◽  
Zongtao Ma ◽  
Jingyao Sun ◽  
Yuhua Yan ◽  
Miaomiao Bu ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Low Cost ◽  
Electronic Waste ◽  
Electronic Devices ◽  
Strain Sensors ◽  
Functional Design ◽  
Nonrenewable Resources ◽  
Design Strategies ◽  
Flexible Sensors

In order to replace nonrenewable resources and decrease electronic waste disposal, there is a rapidly rising demand for the utilization of reproducible and degradable biopolymers in flexible electronics. Natural biopolymers have many remarkable characteristics, including light weight, excellent mechanical properties, biocompatibility, non-toxicity, low cost, etc. Thanks to these superior merits, natural functional biopolymers can be designed and optimized for the development of high-performance flexible electronic devices. Herein, we provide an insightful overview of the unique structures, properties and applications of biopolymers for electronic skins (e-skins) and flexible strain sensors. The relationships between properties and sensing performances of biopolymers-based sensors are also investigated. The functional design strategies and fabrication technologies for biopolymers-based flexible sensors are proposed. Furthermore, the research progresses of biopolymers-based sensors with various functions are described in detail. Finally, we provide some useful viewpoints and future prospects of developing biopolymers-based flexible sensors.

A graphene/single GaAs nanowire Schottky junction photovoltaic device

Nanoscale ◽  
2018 ◽  
Vol 10 (19) ◽  
pp. 9212-9217 ◽  
Author(s):  
Yanbin Luo ◽  
Xin Yan ◽  
Jinnan Zhang ◽  
Bang Li ◽  
Yao Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Optoelectronic Devices ◽  
Photovoltaic Device ◽  
Schottky Junction ◽  
Gaas Nanowire

A graphene/nanowire Schottky junction is a promising structure for low-cost high-performance optoelectronic devices.

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.

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.

A flexible, lightweight and stretchable all-solid-state supercapacitor based on warp-knitted stainless-steel mesh for wearable electronics

2022 ◽  
pp. 004051752110698
Author(s):  
Chuanli Su ◽  
Guangwei Shao ◽  
Qinghua Yu ◽  
Yaoli Huang ◽  
Jinhua Jiang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Performance ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Three Dimensional ◽  
Rate Capability ◽  
Cycling Stability ◽  
Wearable Electronics ◽  
Light Emitting ◽  
Dimensional Network

Highly conductive, flexible, stretchable and lightweight electrode substrates are essential to meet the future demand on supercapacitors for wearable electronics. However, it is difficult to achieve the above characteristics simultaneously. In this study, ultrafine stainless-steel fibers (with a diameter of ≈30 μm) are knitted into stainless-steel meshes (SSMs) with a diamond structure for the fabrication of textile stretchable electrodes and current collectors. The electrodes are fabricated by utilizing an electrodeposited three-dimensional network graphene framework and poly(3,4-ethylenedioxythiophene) (PEDOT) coating on the SSM substrates via a two-step electrodeposition process, which show a specific capacitance of 77.09 F g−1 (0.14 A g−1) and superb cycling stability (91% capacitance retention after 5000 cycles). Furthermore, the assembled flexible stretchable supercapacitor based on the PEDOT/reduced graphene oxide (RGO)@SSM electrodes exhibits an areal capacitance (53 mF cm−2 at 0.1 mA cm−2), a good cycling stability (≈73% capacitance retention after 5000 cycles), rate capability (36 mF cm−2 at 5 mA cm−2), stretchable stability (≈78% capacitance retention at 10% strain for 500 stretching cycles) and outstanding flexibility and stability under various bending deformations. The assembled supercapacitors can illuminate a thermometer and a light-emitting diode, demonstrating their potential application as stretchable supercapacitors. This simple and low-cost method developed for fabricating lightweight, stretchable and stable high-performance supercapacitors offers new opportunities for future stretchable electronic devices.

Colloidal quantum dot ligand engineering for high performance solar cells

2016 ◽  
Vol 9 (4) ◽  
pp. 1130-1143 ◽  
Author(s):  
Ruili Wang ◽  
Yuequn Shang ◽  
Pongsakorn Kanjanaboos ◽  
Wenjia Zhou ◽  
Zhijun Ning ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Optoelectronic Devices ◽  
Colloidal Quantum Dots ◽  
Solution Processed ◽  
Light Emitting ◽  
Colloidal Quantum Dot

Colloidal quantum dots (CQDs) are fast-improving materials for next-generation solution-processed optoelectronic devices such as solar cells, photocatalysis, light emitting diodes, and photodetectors.

scholarly journals Coat-and-print patterning of silver nanowires for flexible and transparent electronics

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Weiwei Li ◽  
Azat Meredov ◽  
Atif Shamim
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Mechanical Stability ◽  
Silver Nanowires ◽  
Protective Layer ◽  
Wide Band ◽  
Material System ◽  
Bending Radius ◽  
Coating Methods ◽  
Wave Range

AbstractSilver nanowires (Ag NWs) possess excellent optoelectronic properties, which have led to many technology-focused applications of transparent and flexible electronics. Many of these applications require patterning of Ag NWs into desired shapes, for which mask-based and printing-based techniques have been developed and widely used. However, there are still several limitations associated to these techniques. These limitations, such as complicated patterning procedures, limited patterning area, and compromised optical transparency, hamper the efficient fabrication of high-performance Ag NW patterns. Here, we propose a coat-and-print approach for effectively patterning Ag NWs. We printed a polymer-based ink on the spin-coated Ag NW films. The ink acts as a protective layer to help remove excess Ag NWs from the substrate and then dissolves itself into an organic solvent. In this way, we can take advantage of both coating-based techniques (lead to Ag NWs with high transparency) and printing-based techniques (efficiently pattern diverse shapes). The resultant Ag NW patterns exhibit comparable conductivity (sheet resistance: 7.1 to 30 Ohm/sq) and transparency (transmittance: 84 to 95% at λ = 550 nm) to those made by conventional coating methods. In addition, the patterned Ag NWs exhibit robust mechanical stability and reliability, surviving extensive bending and peeling tests. Due to higher conductivity, efficient patterning ability and inherent transparency, this material system and application method is highly suitable for transparent and flexible electronics. As a proof of concept, this research demonstrates a wide-band antenna, operating in the mm-wave range that includes the 5G communication band. The proposed antenna exhibits a wide bandwidth of 26 GHz (from 17.9 GHz to 44 GHz), robust return loss under 1000 cyclic bending (bending radius of 3.5 mm), and decent transparency over the entire visible wavelength (86.8% transmittance at λ = 550 nm). This work’s promising results indicate that this method can be adapted for roll-to-roll manufacturing to efficiently produce patterned and optically transparent devices.

Multifunctional Organic Emitters for High‐Performance and Low‐Cost Organic Light‐Emitting Didoes

2019 ◽  
Vol 19 (8) ◽  
pp. 1768-1778 ◽  
Author(s):  
Minyu Chen ◽  
Yi Zhao ◽  
Zhenyu Tang ◽  
Bin Zhang ◽  
Bin Wei
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Light Emitting ◽  
Organic Light
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