Printing Silver Conductive Inks with High Resolution and High Aspect Ratio

Chu, Ta−Ya; Zhang, Zhiyi; Tao, Ye

doi:10.1002/admt.201700321

Cited by 22 publications

(21 citation statements)

References 23 publications

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“…Among the conductive nanomaterials, metals represent the main system of choice. Ag has the highest room‐temperature electrical conductivity, by virtue of which Ag nanomaterials, such as AgNPs and AgNWs, are the most extensively studied metal nanostructures as conductors or electrodes for PE . Since Cu possesses a very high conductivity (only 6% less than that of Ag) and is much cheaper, CuNPs and CuNWs for PE have also drawn much attention .…”

Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

356

347

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PE has been explored for the manufacturing of flexible and stretchable electronic devices by printing functional inks containing soluble or dispersed materials, [14][15][16] which has enabled a wide variety of applications, such as transparent conductive films (TCFs), flexible energy harvesting and storage, thin film transistors (TFTs), electroluminescent devices, and wearable sensors. [17][18][19][20][21][22][23][24] The global PE market should reach $26.6 billion by 2022 from $14.0 billion in 2017 at a compound annual growth rate of 13.6%. [25] PE devices are manufactured by a variety of printing technologies. Typical printing technologies can be divided into two broad categories: noncontact patterning (or nozzle-based patterning) and contact-based patterning. The noncontact techniques include inkjet printing, electrohydrodynamic (EHD) printing, aerosol jet printing, and slot die coating, while screen printing, gravure printing, and flexographic printing are examples of the contact techniques. Each of these techniques has its own advantages and disadvantages, but they all rely on the principle of transferring inks to a substrate. Understanding the characteristics and recent advances of each printing technique is important to further the progress in PE. Moreover, to promote the lab-scale printing technologies to large-scale production process, roll-toroll (R2R) printing, which is one of the manufacturing methods to obtain large-area films with low cost and excellent durability, has drawn much attention from both industry and the research community.Nearly all of devices based on PE require conductive structures, interconnects, and contacts; therefore, highly conductive patterns, usually with high transparency and/or high resolution, fabricated by means of printing conductive materials are one of the most critical components in PE devices. Various printable conductive nanomaterials, such as metal nanomaterials (e.g., metal nanoparticles and metal nanowires) and carbon nanomaterials (e.g., graphene and carbon nanotubes (CNTs)), have been explored and used as major materials for PE. Applying printing technology to deposition of the conductive nanomaterials requires formulation of suitable inks. After depositing inks on different substrates, post-printing treatment, Printed electronics is attracting a great deal of attention in both research and commercialization as it enables fabrication of large-scale, low-cost electronic devices on a variety of substrates. Printed electronics plays a critical role infacilitating widespread flexible electronics and more recently stretchable electronics. Conductive nanomaterials, such as metal nanoparticles and nanowires, carbon nanotubes, and graphene, are promising building blocks for printed electronics. Nanomaterial-based printing technologies, formulation of printable inks, post-printing treatment, and integration of functional devices have progressed substantially in the recent years. This review summarizes basic principles and recent development of common printing technologie...

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Section: Printing Technology: Materials and Recent Developmentmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

356

347

View full text Add to dashboard Cite

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“…Obtaining lines with a high aspect ratio is possible only using additional approaches for processing the substrate or the deposited material. Therefore, one of the approaches is to structure the substrate using imprinting or lithography, which limits the spreading of ink on it [24], and the second approach is based on the use of multiple printing passes in combination with local laser sintering of the deposited material [25][26][27][28]. Both presented approaches significantly complicate and increase the cost of the aerosol jet printing process through the use of additional lithographic, laser and optomechanical equipment.…”

Section: Introductionmentioning

confidence: 99%

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

et al. 2020

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In this work, we studied the formation of conductive silver lines with high aspect ratios (AR = thickness/width) > 0.1 using the modernized method of aerosol jet printing on a heated silicon substrate. The geometric (AR) and electrical (resistivity) parameters of the formed lines were investigated depending on the number of printing layers (1–10 layers) and the temperature of the substrate (25–300 °C). The AR of the lines increased as the number of printing layers and the temperature of the substrate increased. An increase in the AR of the lines with increasing substrate temperature was associated with a decrease in the ink spreading as a result of an increase in the rate of evaporation of nano-ink. Moreover, with an increase in the substrate temperature of more than 200 °C, a significant increase in the porosity of the formed lines was observed, and as a result, the electrical resistivity of the lines increased significantly. Taking into account the revealed regularities, it was demonstrated that the formation of silver lines with a high AR > 0.1 and a low electrical resistivity of 2–3 μΩ∙cm is advisable to be carried out at a substrate temperature of about 100 °C. The adhesion strength of silver films formed on a heated silicon substrate is 2.8 ± 0.9 N/mm2, which further confirms the suitability of the investigated method of aerosol jet printing for electronic applications.

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“…For inkjet printing, conductive inks based on silver [14][15][16][17][18][19][20] and copper [21][22][23][24][25] have been widely studied. Copper ink has received considerable attentions because of its relative high electrical conductivity and very low cost [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…1 Iss. 1, pp [10][11][12][13][14][15][16][17][18][19]. This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)…”

mentioning

confidence: 99%

Effect of processing parameters on laser sintering of silver MOD inks for inkjet printing

Yang

Liu

Zhao

et al. 2019

IET Collaborative Intelligent Manufacturing

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Sintering is essential for inkjet printing and laser sintering is a promising sintering technology. In this study, the effect of laser sintering processing parameters on the sintering quality of silver content metal‐organic‐decomposition (MOD) inks is studied. A novel mathematic model is developed to reveal the temperature evolutions in MOD inks and the substrates during laser sintering. In the novel model, the change of thermal conductivity of MOD inks is taken into consideration for the first time to improve simulation accuracy. The simulation results agree well with the experiments, showing the advantages of the mathematic model. The surface morphology of the sintered MOD inks are also observed through experiments. The simulation and experimental results show that the laser sintering processing parameters have significant effects on the sintering quality. With authors’ optimised laser sintering processing parameters, the printed pattern can be sufficiently sintered and its electronic conductivity can reach 1.56 × 10–7 S/m. Thus, a sintering optimisation strategy is proposed based on the results. Finally, a microstrip antenna is fabricated with the optimised sintering strategy. The performance of the antenna agree well with the simulation results, indicating authors’ optimising strategy is useful for industrial production.

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Printing Silver Conductive Inks with High Resolution and High Aspect Ratio

Cited by 22 publications

References 23 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Aerosol Jet Printing of Silver Lines with A High Aspect Ratio on A Heated Silicon Substrate

Effect of processing parameters on laser sintering of silver MOD inks for inkjet printing

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