Inkjet Printed Fractal-Connected Electrodes with Silver Nanoparticle Ink

Vaseem, Mohammad; Lee, Kil Mok; Hong, A-Ra; Hahn, Yoon‐Bong

doi:10.1021/am300689d

Cited by 62 publications

(34 citation statements)

References 41 publications

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“…Similarly, printed electronics are limited by variation of the conductivity or porosity across a printed feature. [17][18][19] Biological assays based on inkjet technology also need a uniform concentration of material across the deposit to be most effective.…”

Section: -8mentioning

confidence: 99%

Control of the Particle Distribution in Inkjet Printing through an Evaporation-Driven Sol–Gel Transition

Talbot

Yang

Berson

2014

ACS Appl. Mater. Interfaces

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2014) 'Control of the particle distribution in inkjet printing through an evaporation-driven sol-gel transition.', ACS applied materials interfaces., 6 (12). pp. 9572-9583.Further information on publisher's website:http://dx.doi.org/10.1021/am501966nPublisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in ACS Applied Materials Interfaces, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see http://dx.doi.org/10.1021/am501966n. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract A ring stain is often an undesirable consequence of a droplet drying. Particles inside evaporating droplets with a pinned contact line are transported towards the periphery by radial flow. In this paper, we demonstrate how suspensions of laponite can be used to control the radial flow inside picolitre droplets and produce uniform deposits.The improvement in homogeneity arises from a sol-gel transition during evaporation.Droplets gel from the contact line inwards, reducing radial motion of particles and thus inhibiting the formation of a ring stain. The internal flows and propagation of the gelling front were followed by high-speed imaging of tracer particles during the evaporation of picolitre droplets of water. In the inkjet nozzle, the laponite network * To whom correspondence should be addressed † Department of Chemistry, Durham University, Durham, DH1 3LE, United Kingdom ‡ School of Engineering and Computing Sciences, Durham University, Durham, DH1 3LE, United Kingdom 1 is broken down under high shear. Recovery of the low shear viscosity of laponite suspensions was shown to be fast with respect to the lifetime of the droplet, which was instrumental in controlling the deposit morphology. The radial and vertical particle distributions within dried deposits were measured for water droplets loaded with 1%w and 5%w polystyrene spheres and various concentrations of laponite. Aggregation of the polystyrene spheres was suppressed by addition of colloidal silica. The formulation can be tuned to vary the deposit profile from a ring to a pancake or a dome.

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Section: -8mentioning

confidence: 99%

Control of the Particle Distribution in Inkjet Printing through an Evaporation-Driven Sol–Gel Transition

Talbot

Yang

Berson

2014

ACS Appl. Mater. Interfaces

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“…Silver possesses excellent conductivity and anti-oxidation properties, thus silver based inks show a potential application in fabrication of high performance electrodes of TFT by inkjet printing [7][8][9][10]. Silver based ink could be divided into two types: one is based on silver nanoparticles [11][12][13] and the other is silver salt ink [14][15][16]. Organic polymers as a disperse stabilizer are inevitably presented in nanoparticle inks to prevent aggregation of silver nanoparticles [13], and can be usually removed by high temperature sintering or high-intensity light curing [17], to facilitate the merging of silver nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Amorphous InGaZnO Thin Film Transistor Fabricated with Printed Silver Salt Ink Source/Drain Electrodes

et al. 2017

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Abstract:Recently, amorphous indium-gallium-zinc-oxide thin film transistors (a-IGZO TFTs) with inkjet printing silver source/drain electrodes have attracted great attention, especially for large area and flexible electronics applications. The silver ink could be divided into two types: one is based on silver nanoparticles, and the other is silver salt ink. Organic materials are essential in the formulation of nanoparticle ink as a strong disperse stabilizer to prevent agglomeration of silver particles, but will introduce contact problems between the silver electrodes and the a-IGZO active layer after annealing, which is difficult to eliminate and leads to poor device properties. Our experiment is aimed to reduce this effect by using a silver salt ink without stabilizer component. With optimized inkjet printing conditions, the high performance of a-IGZO TFT was obtained with a mobility of 4.28 cm 2 /V·s and an on/off current ratio over 10 6 . The results have demonstrated a significant improvement for a-IGZO TFTs with directly printed silver electrodes. This work presents a promising platform for future printed electronic applications.

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“…The critical issue that needs to be addressed when inkjet printing is applied to these applications is ink development. Previously, conductive inks based on silver [6][7][8][9][10][11][12][13][14][15][16][17][18], copper [19], carbon [20], and conductive polymers [21] have been demonstrated, among which, silverbased ink has received great interests because of excellent conductivity and anti-oxidation properties of bulk silver. To date, two kinds of silver inks have been adopted for inkjet printing conductive patterns on substrates.…”

Section: Introductionmentioning

confidence: 99%

“…To date, two kinds of silver inks have been adopted for inkjet printing conductive patterns on substrates. In one approach, suspensions of silver nanoparticles were used [6][7][8][9][10][11]. Although silver nanoparticle inks are already commercially available and widely used, the approach has the problem of high annealing temperatures (generally N200°C), restricting its application on some flexible substrates (e.g., plastics) demanding for newly emerged electronics.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of high silver content MOD ink by using silver oxalate precursor for inkjet printing applications

Dong

Liu

et al. 2015

Thin Solid Films

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Inkjet Printed Fractal-Connected Electrodes with Silver Nanoparticle Ink

Cited by 62 publications

References 41 publications

Control of the Particle Distribution in Inkjet Printing through an Evaporation-Driven Sol–Gel Transition

Control of the Particle Distribution in Inkjet Printing through an Evaporation-Driven Sol–Gel Transition

Amorphous InGaZnO Thin Film Transistor Fabricated with Printed Silver Salt Ink Source/Drain Electrodes

Facile synthesis of high silver content MOD ink by using silver oxalate precursor for inkjet printing applications

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