Novel Insights into Inkjet Printed Silver Nanowires Flexible Transparent Conductive Films

Silver nanowire (AgNWs) inks for inkjet printing were prepared and the effects of the solvent system, wetting agent, AgNWs suspension on the viscosity, surface tension, contact angle between ink droplet and poly(ethylene) terephthalate (PET) surface, and pH value of AgNWs ink were discussed. Further, AgNWs flexible transparent conductive films were fabricated by using inkjet printing process on the PET substrate, and the effects of the number printing layer, heat treatment temperature, drop frequency, and number of nozzle on the microstructures and photoelectric properties of AgNWs films were investigated in detail. The experimental results demonstrated that the 14-layer AgNWs printed film heated at 60 °C and 70 °C had an average sheet resistance of 13 Ω∙sq−1 and 23 Ω∙sq−1 and average transparency of 81.9% and 83.1%, respectively, and displayed good photoelectric performance when the inkjet printing parameters were set to the voltage of 20 V, number of nozzles of 16, drop frequency of 7000 Hz, droplet spacing of 15 μm, PET substrate temperatures of 40 °C and nozzles of 35 °C during printing, and heat treatment at 60 °C for 20 min. The accumulation and overflow of AgNWs at the edges of the linear pattern were observed, which resulted in a decrease in printing accuracy. We successfully printed the heart-shaped pattern and then demonstrated that it could work well. This showed that the well-defined pattern with good photoelectric properties can be obtained by using an inkjet printing process with silver nanowires ink as inkjet material.

Download Full-text

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

Nanomaterials ◽

10.3390/nano11061360 ◽

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.

Download Full-text

Rapid and Facile Synthesis of High-Performance Silver Nanowires by a Halide-Mediated, Modified Polyol Method for Transparent Conductive Films

Nanomaterials ◽

10.3390/nano10061139 ◽

2020 ◽

Vol 10 (6) ◽

pp. 1139

Author(s):

Lin Cao ◽

Qin Huang ◽

Jie Cui ◽

Huaijun Lin ◽

Wei Li ◽

...

Keyword(s):

High Performance ◽

Silver Nanowires ◽

Average Length ◽

Average Diameter ◽

Silver Nanowire ◽

Polyol Method ◽

Synthesis Process ◽

Transparent Conductive Films ◽

Conductive Films ◽

Modified Polyol Method

Silver nanowires are receiving increasing attention as a kind of prospective transparent and conductive material. Here, we successfully synthesized high-performance silver nanowires with a significantly decreased reaction time by a modified polyol method. The synthesis process involved the addition of halides, including NaCl and NaBr, to control the release rate of Ag+ ions, as Cl− and Br− ions react with Ag+ ions to form AgCl and AgBr with different solubilities. As a result, Ag+ ions could be slowly released by graded dissolution, and the formation of silver nanowires was promoted. The results showed that the concentration of the added halides played an important role in the morphology of the final product. High-quality silver nanowires with an average diameter of 70 nm and average length of 21 μm were obtained by optimizing the reaction parameters. Afterwards, a simple silver nanowire coating was applied in order to fabricate the transparent conductive films. The film that was based on the silver nanowires provided a transmittance of 91.2% at the 550 nm light wavelength and a sheet resistance of about 78.5 Ω·sq−1, which is promising for applications in flexible and transparent optoelectronic devices.

Download Full-text

All solution-processed silver nanowires composite silica nanospheres antireflection structure with synergetic optoelectronic performance

New Journal of Chemistry ◽

10.1039/d1nj02518j ◽

2021 ◽

Author(s):

Yuxin Tang ◽

Wanying Yin ◽

Yue Huang ◽

Ganghua Zhang ◽

Qingbiao Zhao ◽

...

Keyword(s):

Tin Oxide ◽

Indium Tin Oxide ◽

Silver Nanowires ◽

Great Promise ◽

Silica Nanospheres ◽

Solution Processed ◽

Transparent Conductive Films ◽

Conductive Films

Silver nanowires (AgNWs) network has shown great promise as transparent conductive films (TCFs) due to its excellent optoelectronic performance. In order to replace indium tin oxide (ITO), considerable intricate methods...

Download Full-text

Silver nanowires decorated with silver nanoparticles for low-haze flexible transparent conductive films

Scientific Reports ◽

10.1038/srep16371 ◽

2015 ◽

Vol 5 (1) ◽

Cited By ~ 47

Author(s):

Mini Mol Menamparambath ◽

C. Muhammed Ajmal ◽

Kwang Hee Kim ◽

Daejin Yang ◽

Jongwook Roh ◽

...

Keyword(s):

Silver Nanoparticles ◽

Silver Nanowires ◽

Transparent Conductive Films ◽

Conductive Films

Download Full-text

Preparation and Performance Research of Highly Homogeneous Silver Nanowire Transparent Conductive Films on the Flexible Substrate

ACTA PHOTONICA SINICA ◽

10.3788/gzxb20184711.1131002 ◽

2018 ◽

Vol 47 (11) ◽

pp. 1131002

Author(s):

胥靖 XU Jing ◽

杨健君 YANG Jian-jun ◽

钟建 ZHONG Jian ◽

曾维 ZENG Wei ◽

杨凯强 YANG Kai-qiang

Keyword(s):

Flexible Substrate ◽

Silver Nanowire ◽

Transparent Conductive Films ◽

Conductive Films ◽

And Performance ◽

Performance Research

Download Full-text

Silver Nanowire Transparent Conductive Films with High Uniformity Fabricated via a Dynamic Heating Method

ACS Applied Materials & Interfaces ◽

10.1021/acsami.6b00500 ◽

2016 ◽

Vol 8 (15) ◽

pp. 9865-9871 ◽

Cited By ~ 45

Author(s):

Yonggao Jia ◽

Chao Chen ◽

Dan Jia ◽

Shuxin Li ◽

Shulin Ji ◽

...

Keyword(s):

Silver Nanowire ◽

Heating Method ◽

Transparent Conductive Films ◽

Conductive Films ◽

High Uniformity ◽

Dynamic Heating

Download Full-text

Hexagonal and Square Patterned Silver Nanowires/PEDOT:PSS Composite Grids by Screen Printing for Uniformly Transparent Heaters

Polymers ◽

10.3390/polym11030468 ◽

2019 ◽

Vol 11 (3) ◽

pp. 468 ◽

Cited By ~ 7

Author(s):

Xin He ◽

Gengzhe Shen ◽

Ruibin Xu ◽

Weijia Yang ◽

Chi Zhang ◽

...

Keyword(s):

Screen Printing ◽

Silver Nanowires ◽

Composite Films ◽

Silver Nanowire ◽

Mass Ratio ◽

Large Area ◽

High Transparency ◽

Square Grid ◽

Photoelectric Properties ◽

Printing Parameters

Transparent conductive films with hexagonal and square patterns were fabricated on poly(ethylene terephthalate) (PET) substrates by screen printing technology utilizing a poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) and silver nanowire (Ag NWs) composite ink. The printing parameters—mesh number, printing layer, mass ratio of PEDOT:PSS to Ag NWs and pattern shape—have a significant influence on the photoelectric properties of the composite films. The screen mesh with a mesh number of 200 possesses a suitable mesh size of 74 µm for printing clear and integrated grids with high transparency. With an increase in the printing layer and a decrease in the mass ratio of PEDOT:PSS to Ag NWs, the transmittance and resistance of the printed grids both decreased. When the printing layer is 1, the transmittance and resistance are 85.6% and 2.23 kΩ for the hexagonal grid and 77.3% and 8.78 kΩ for the square grid, indicating that the more compact arrangement of square grids reduces the transmittance, and the greater number of connections of the square grid increases the resistance. Therefore, it is believed that improved photoelectric properties of transparent electrodes could be obtained by designing a printing pattern with optimized printing parameters. Additionally, the Ag NWs/PEDOT:PSS composite films with hexagonal and square patterns exhibit high transparency and good uniformity, suggesting promising applications in large-area and uniform heaters.

Download Full-text

Enhancement of the Conductivity and Uniformity of Silver Nanowire Flexible Transparent Conductive Films by Femtosecond Laser-Induced Nanowelding

Nanomaterials ◽

10.3390/nano9050673 ◽

2019 ◽

Vol 9 (5) ◽

pp. 673 ◽

Cited By ~ 5

Author(s):

Youwang Hu ◽

Chang Liang ◽

Xiaoyan Sun ◽

Jianfen Zheng ◽

Ji’an Duan ◽

...

Keyword(s):

Sheet Resistance ◽

Welding Process ◽

High Repetition Rate ◽

Silver Nanowire ◽

Silver Nanostructures ◽

Transparent Conductive Films ◽

Conductive Films ◽

Fs Laser ◽

Mechanical Bending ◽

Welding Procedure

In order to improve the performance of silver nanowire (AgNW) flexible transparent conductive films (FTCFs), including the conductivity, uniformity, and reliability, the welding of high repetition rate femtosecond (fs) laser is applied in this work. Fs laser irradiation can produce local enhancement of electric field, which induce melting at the gap of the AgNWs and enhance electrical conductivity of nanowire networks. The overall resistivity of the laser-welded AgNW FTCFs reduced significantly and the transparency changed slightly. Meanwhile, PET substrates were not damaged during the laser welding procedure in particular parameters. The AgNW FTCFs can achieve a nonuniformity factor of the sheet resistance as 4.6% at an average sheet resistance of 16.1 Ω/sq and transmittance of 91%. The laser-welded AgNW FTCFs also exhibited excellent reliability against mechanical bending over 10,000 cycles. The welding process may open up a new approach for improvement of FTCFs photoelectric property and can be applied in the fabrication of silver nanostructures for flexible optoelectronic and integration of functional devices.

Download Full-text