Formulation of concentrated and stable ink of silver nanowires with applications in transparent conductive films

Chen, Chao; Jia, Yonggao; Jia, Dan; Li, Shuxin; Ji, Shulin; Ye, Changhui

doi:10.1039/c6ra25508f

Cited by 28 publications

(21 citation statements)

References 39 publications

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“…The viscosity and surface tension of AgNWs ink are two important parameters that affect droplet morphology and size, printability, droplet spreading, and microstructure and performance of the printed film [ 37 , 38 , 39 ]. Seen from Table 1 , the viscosity of ink with the cosolvent of ethylene glycol an isopropyl alcohol is higher than that of the cosolvent of ethylene glycol and absolute ethanol since the viscosity of isopropyl alcohol is higher than that of absolute ethanol.…”

Section: Resultsmentioning

confidence: 99%

“…The difference of droplet deposition shape maybe related to the impact velocity, viscosity, surface tension, the contact angle, as well as PET surface characteristics. When the droplet is ejected from nozzle to contact PET substrate, it needs to go through the impact, diffusion, recoil, oscillation, until to equilibrium due to the impact of kinetic energy [ 37 , 38 , 39 ]. The equilibrium shape of the droplet is related to the surface tension.…”

Section: Resultsmentioning

confidence: 99%

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Inkjet-Printed Silver Nanowire Ink for Flexible Transparent Conductive Film Applications

Wang

et al. 2022

Nanomaterials

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The development of flexible transparent conductive electrodes has been considered as a key issue in realizing flexible functional electronics. Inkjet printing provides a new opportunity for the manufacture of FFE due to simple process, cost-effective, environmental friendliness, and digital method to circuit pattern. However, obtaining high concentration of inkjet- printed silver nanowires (AgNWs) conductive ink is a great challenge because the high aspect ratio of AgNWs makes it easy to block the jetting nozzle. This study provides an inkjet printing AgNWs conductive ink with low viscosity and high concentration of AgNWs and good printing applicability, especially without nozzle blockage after printing for more than 4 h. We discussed the effects of the components of the ink on surface tension, viscosity, contact angle as well as droplet spreading behavior. Under the optimized process and formulation of ink, flexible transparent conductive electrode with a sheet resistance of 32 Ω·sq−1–291 nm·sq−1 and a transmittancy at 550 nm of 72.5–86.3% is achieved. We investigated the relationship between the printing layer and the sheet resistance and the stability of the sheet resistance under a bending test as well as the infrared thermal response of the AgNWs–based flexible transparent conductive electrode. We successfully printed the coupling electrodes and demonstrated the excellent potential of inkjet-printed AgNWs—based flexible transparent conductive electrode for developing flexible functional electronics.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Inkjet-Printed Silver Nanowire Ink for Flexible Transparent Conductive Film Applications

Wang

et al. 2022

Nanomaterials

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“…It is worth noting that AgNWs based conductive ink is a prerequisite for producing high-performance AgNWs network, and a suitable viscosity is equally critical for screen printing [34,45]. Traditionally commonly used organic polymer thickeners are toxic, such as trimethylolpropane triacrylate (TMPTA), tripropylene glycol diacrylate (TPGDA) [46], polyvinylidene fluoride (PVDF) [47] and dimethylformamide (DMF) [48], and many post-processing steps are required, resulting in high cost and environmental pollution. Therefore, a new thickener with high transmittance should be developed to disperse AgNWs and increase the viscosity.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Zhang

Shan

et al. 2022

Mater. Res. Express

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Silver nanowire transparent conductive films (AgNW TCFs) were facilely prepared by screen printing conductive ink on a polyethylene terephthalate (PET) substrate, and the effects of ink compositions and oily stencil on the optoelectrical properties of AgNW TCFs were investigated in detail. 7.3 mg·mL-1 hydroxypropyl methylcellulose (HPMC), 4.12 mg·mL-1 AgNWs and 98T oily stencil allow the preparation of large-scale AgNW TCFs with high transmittance, low square resistance and high uniformity. The resultant screen printed AgNW TCFs possesses a sheet resistance as low as 13.0±0.6 Ω/sq, a transmittance of about 95.3% at 550 nm wavelength (deducting the background) and a haze of 3.86 (deducting the background), and can achieve a surface root mean square roughness of 3.33 nm, a film size of 15×20 cm2 and personalized pattern by means of the screen printing process. The transparent film heater (TFH) constructed by AgNW TCFs can rise to a usable temperature of 55°C at a low voltage of 4 V within 80 s. This process provides a simple strategy for fabricating uniform, patterned and large size AgNW TCFs for various devices.

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“…The conductive ink is coated onto flexible substrates, such as fabric, paper, polyethylene terephthalate (PET), and polyimide (PI), by silkscreen printing, inkjet printing, spraying, vacuum extraction, and the filtration transfer method to make flexible, conductive pathways or transparent conductive films, which are then applied to wearable electronic products [15,16,17,18,19]. The main factors affecting the electrical properties of conductive inks are the shape and size of the nanoparticles, the solid content, the printing process, the sintering process, and the pretreatment of the substrate surface [15,16,17,18,19,20,21]. In our group, we prepared conductive inks with silver nanowires as the conductive phase and investigated the effects of the mass fraction of silver nanoparticles and the sintering process on the microstructure and electrical properties of samples [22].…”

Section: Introductionmentioning

confidence: 99%

Silver Nanowire Ink for Flexible Circuit on Textiles

Yang

et al. 2019

Micromachines

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Low cost electronics implemented in textiles could pave the way to a fully new generation of smart products in the fields of healthcare, sport, fashion, and safety. Although many methods have found their way into the market, many problems still need to be solved and much progress has to be made to enable the commercial exploitation of such products. In this paper, silver nanowires of 60–100 nm in diameter and 8–15 μm in length were achieved by the polyol solvothermal method, and aqueous silver nanowire conductive inks were prepared with the synthesized silver nanowires as the conductive phase, in the presence of polyaniline, guar, and hydrochloric acid. The conductive inks were printed on cotton fabric substrate by screen printing process. The effects of the amount of silver nanowires, layers of coating, and treatment temperature on the microstructure and electrical properties of samples were investigated by scanning electron microscopy and the four-point probe method. The results show that the conductivity and densification of the samples increased with increased amount of silver nanowires, layers of coating, and treatment temperature. The heat treatment helped to improve densification of the silver nanowires and conductivity of the sample. The resistance of the samples increased after bending due to loosening of the overlap between the silver nanowires.

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Formulation of concentrated and stable ink of silver nanowires with applications in transparent conductive films

Abstract: Concentrated and long-term stable Ag nanowire ink is formulated to coat transparent conductive films with superior comprehensive performance after simple cleaning.

Cited by 28 publications

References 39 publications

Inkjet-Printed Silver Nanowire Ink for Flexible Transparent Conductive Film Applications

Inkjet-Printed Silver Nanowire Ink for Flexible Transparent Conductive Film Applications

Facile fabrication of large-scale silver nanowire transparent conductive films by screen printing

Silver Nanowire Ink for Flexible Circuit on Textiles

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