Screen printable MWCNT inks for printed electronics

Menon, Heera; Aiswarya, R.; Surendran, Kuzhichalil Peethambharan

doi:10.1039/c7ra06260e

Cited by 62 publications

(55 citation statements)

References 29 publications

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“…There are three major approaches to disperse CNTs: i) dispersing CNTs in neat organic solvents, or superacids; ii) dispersing CNTs in aqueous media by using dispersing agents, such as surfactants or polymers; and iii) modification of CNTs with functional groups, which helps to disperse CNTs in solution . For example, CNT ink was screen printed by using sodium dodecyl sulfate, PVP, and ethanol as dispersant, binder, and solvent, respectively . To make MWNTs dispersible in water, MWNTs were first refluxed in HNO 3 to produce carboxyl, hydroxyl, and carbonyl groups at the defect sizes of the nanotubes.…”

Section: Formulation Of Conductive Nanomaterials Inkmentioning

confidence: 99%

“…After laser‐induced plasmonic welding, the optoelectronic performance of the AgNW network was improved to sheet resistance of 5 Ω sq −1 and transmittance of 91%. Furthermore, after printing another layer of GO on top of the AgNW film, the GO/AgNW film achieved outstanding electrical and optical performances ( R s = 17 Ω sq −1 and T = 93%); cold welding due to the wrapping of GO stack formed copercolated solder points to reduce the nanojunction resistance . Moreover, indium zinc oxide (IZO)/AgNW TCF from a single liquid precursor ink was deposited by gravure printing on polyethylene naphthalate substrate .…”

Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

See 1 more Smart Citation

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

Huang

Zhu

2019

Adv Materials Technologies

358

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: Formulation Of Conductive Nanomaterials Inkmentioning

confidence: 99%

Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

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

Huang

Zhu

2019

Adv Materials Technologies

358

347

View full text Add to dashboard Cite

show abstract

“… 23 Stringent dispersion requirements complicate the design of stretchable, conductive, and printable inks, but such inks have been reported. 24 Surendran et al demonstrated a printable multiwalled CNT (MWCT) ink for screen printing using 9 wt % material loading, 7.5% SDS–ethanol dispersant loading, and 50 wt % PVP concentration. 24 The solution was mechanically agitated to promote dispersion.…”

Section: Nanomaterials Ink Approachesmentioning

confidence: 99%

“… 24 Surendran et al demonstrated a printable multiwalled CNT (MWCT) ink for screen printing using 9 wt % material loading, 7.5% SDS–ethanol dispersant loading, and 50 wt % PVP concentration. 24 The solution was mechanically agitated to promote dispersion. Because of high PVP concentration, viscosity was low, but the ink was screen-printable on a variety of substrates.…”

Section: Nanomaterials Ink Approachesmentioning

confidence: 99%

Advances in Screen Printing of Conductive Nanomaterials for Stretchable Electronics

2021

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Stretchable electronics have demonstrated tremendous potential in wearable healthcare, advanced diagnostics, soft robotics, and persistent human–machine interfaces. Still, their applicability is limited by a reliance on low-throughput, high-cost fabrication methods. Traditional MEMS/NEMS metallization and off-contact direct-printing methods are not suitable at scale. In contrast, screen printing is a high-throughput, mature printing method. The recent development of conductive nanomaterial inks that are intrinsically stretchable provides an exciting opportunity for scalable fabrication of stretchable electronics. The design of screen-printed inks is constrained by strict rheological requirements during printing, substrate–ink attraction, and nanomaterial properties that determine dispersibility and percolation threshold. Here, this review provides a concise overview of these key constraints and a recent attempt to meet them. We begin with a description of the fluid dynamics governing screen printing, deduce from these properties the optimal ink rheological properties, and then describe how nanomaterials, solvents, binders, and rheological agents are combined to produce high-performing inks. Although this review emphasizes conductive interconnections, these methods are highly applicable to sensing, insulating, photovoltaic, and semiconducting materials. Finally, we conclude with a discussion on the future opportunities and challenges in screen-printing stretchable electronics and their broader applicability.

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“…In the literature, water-based conducting inks have been prepared by simply mixing graphene and chemically functionalized multi-walled carbon nanotubes (MWCNTs) [18]. However, as carbon nanomaterials are in principle hydrophobic, inks for printed electronics are most often stabilized by a surfactant, such as sodium dodecylbenzenesulfonate (SDBS) or polyvinylpyrrolidone [19][20][21]. Once printed or painted, typical difficulties for the utilization of CNT films are their low adhesion, in particular to flexible plastic substrates, and their sensibility to mechanical damage.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Film Electrodes with Acrylic Additives: Blocking Electrochemical Charge Transfer Reactions

et al. 2020

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Carbon nanotubes (CNTs) processed into conductive films by liquid phase deposition technologies reveal increasing interest as electrode components in electrochemical device platforms for sensing and energy storage applications. In this work we show that the addition of acrylic latex to water-based CNT inks not only favors the fabrication of stable and robust flexible electrodes on plastic substrates but, moreover, sensitively enables the control of their electrical and electrochemical transport properties. Importantly, within a given concentration range, the acrylic additive in the films, being used as working electrodes, effectively blocks undesired faradaic transfer reactions across the electrode–electrolyte interface while maintaining their capacitance response as probed in a three-electrode electrochemical device configuration. Our results suggest a valuable strategy to enhance the chemical stability of CNT film electrodes and to suppress non-specific parasitic electrochemical reactions of relevance to electroanalytical and energy storage applications.

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Screen printable MWCNT inks for printed electronics

Abstract: A fast curing screen-printable ink formulation for MWCNT possessing excellent stability, adhesion strength, and electrical properties is reported.

Cited by 62 publications

References 29 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

Advances in Screen Printing of Conductive Nanomaterials for Stretchable Electronics

Carbon Nanotube Film Electrodes with Acrylic Additives: Blocking Electrochemical Charge Transfer Reactions

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