Dispersion stabilization of conductive transparent oxide nanoparticles

Cho, Young-Sang; Kim, Hyang-Mi; Hong, Jeong-Jin; Yi, Gi‐Ra; Jang, Se-Hwan; Yang, Seung‐Man

doi:10.1016/j.colsurfa.2008.11.014

Cited by 32 publications

(12 citation statements)

References 36 publications

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“…The hydrophilic segments form a repulsive layer suppressing the coagulation of the nanoparticles present and stabilize them. On the role and effects of the dispersant agents in ink-jet inks, the reader is referred to Soleimani-Gorgani [ 27 ] and Young-Sang Cho [ 28 ] for further details.…”

Section: Resultsmentioning

confidence: 99%

Water-Based Indium Tin Oxide Nanoparticle Ink for Printed Toluene Vapours Sensor Operating at Room Temperature

Mašlík

Kuřitka

Urbánek

et al. 2018

Sensors

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This study is focused on the development of water-based ITO nanoparticle dispersions and ink-jet fabrication methodology of an indium tin oxide (ITO) sensor for room temperature operations. Dimensionless correlations of material-tool-process variables were used to map the printing process and several interpretational frameworks were re-examined. A reduction of the problem to the Newtonian fluid approach was applied for the sake of simplicity. The ink properties as well as the properties of the deposited layers were tested for various nanoparticles loading. High-quality films were prepared and annealed at different temperatures. The best performing material composition, process parameters and post-print treatment conditions were used for preparing the testing sensor devices. Printed specimens were exposed to toluene vapours at room temperature. Good sensitivity, fast responses and recoveries were observed in ambient air although the n-type response mechanism to toluene is influenced by moisture in air and baseline drift was observed. Sensing response inversion was observed in an oxygen and moisture-free N2 atmosphere which is explained by the charge-transfer mechanism between the adsorbent and adsorbate molecules. The sensitivity of the device was slightly better and the response was stable showing no drifts in the protective atmosphere.

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Section: Resultsmentioning

confidence: 99%

Water-Based Indium Tin Oxide Nanoparticle Ink for Printed Toluene Vapours Sensor Operating at Room Temperature

Mašlík

Kuřitka

Urbánek

et al. 2018

Sensors

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“…The other plausible alternative solution to this problem can be the use of high‐quality crystalline nanoparticles that are typically prepared from gas‐phase synthesis routes at very high temperatures to enable single‐phase and high intraparticle mobility values; to print functional devices, these nanoparticles have to be formulated into printable grade of nanoinks, which can either be done using electrostatic or electrosteric stabilization against their natural tendency of agglomeration (due to high surface energies). The electrostatic stabilization involves repulsive Columbic forces, by the accumulation of identical surface charges at the nanoparticles’ surfaces that can counter the van der Waals attraction; however, the repulsive forces, generally being weak, render less possible particle loading in the nanoink with relatively lower shelf‐life. Accordingly, the electrostatic stabilization of indium oxide (In 2 O 3 ) nanoparticles reported by Dasgupta et al resulted in low particle loading in the nanoink and less number of percolation paths; thus, the device mobility of the FETs, processed at room temperatures, could only reach 0.8 cm 2 V −1 s −1 .…”

Section: Preparation Conditions and Corresponding Electrical Performamentioning

confidence: 99%

Low‐Temperature Processing of Printed Field‐Effect Transistors from Sublimating‐Stabilizer Derived Oxide Nanodispersions

Divya

Devabharathi

Mondal

et al. 2019

Adv Elect Materials

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Oxide semiconductors are becoming an increasingly attractive choice for solution processed/printed transistors and circuits, as they possess numerous critical advantages over the other printable semiconductor technologies, such as abundance, low‐cost, environmental/thermal stability, nontoxicity, and most importantly, excellent electronic transport properties. However, on the downside, there are also major challenges, one of which is their high process temperatures, especially when they are processed from oxide precursors. In order to address this limitation, here, a general recipe for low temperature curable nanodispersions/nanoinks is proposed using aromatic surfactants that sublimates near room temperature. In this regard, stable nanoinks from In2O3 nanoparticles, with high particle loading, are developed using an inexpensive, nontoxic aromatic compound thymol as the stabilizer; while, thymol sublimates near room temperature (<40 °C), a quick heating at 100 °C is carried out to ensure its complete removal. The printed field‐effect transistors from thymol‐stabilized nanoinks show an on/off ratio >107, a maximum device mobility of 13.5 cm2 V−1 s−1, and transconductance values as high as 10 µS µm−1. It is believed that this general route to obtain low temperature curable electronic grade nanodispersions may find applications beyond the printed logic electronics demonstrated in the present study.

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“…However, the sol‐gel process exhibits inherent drawbacks in that the cast film has a low density and high porosity and involves an inevitable sintering process at a very high temperature; the former disadvantage leads to a relatively high value of electrical resistance while the latter limits applications on composites comprising polymers. In view of these existent difficulties, a new approach using a well‐dispersed suspension has been proposed as a simple alternative method for depositing TCO films; this method also features advantages of low cost and suitability for mass production …”

Section: Introductionmentioning

confidence: 99%

“…This is because most commercially accessible doped ZnO powders are fine and severely undergo agglomeration in suspension. To date, few studies have reported applicable dispersants and dispersion procedures for these powders . Therefore, this investigation studies and identifies the dispersion and relevant dispersants used with the increasingly valued AZO in the industrial common solvent, dimethylacetamide (DMAC).…”

Section: Introductionmentioning

confidence: 99%

Dispersion of aluminum‐doped zinc oxide nanopowder in non‐aqueous suspensions

Huang

2017

J Am Ceram Soc

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This study proposes appropriate dispersants for dispersing aluminum-doped zinc oxide (AZO) nanopowder in the commonly used organic solvent-dimethylacetamide (DMAC). The dispersion efficiencies and stabilization mechanisms of four DMAC-soluble dispersants, poly(acrylic acid) (PAA), polyethyleneimine (PEI), poly(vinyl alcohol) (PVA), and poly(vinyl pyrrolidone) (PVP), are compared. The non-polyelectrolyte-based PVA and PVP surprisingly exhibit greater efficiency than the polyelectrolyte-based PAA and PEI. This is because the nano AZO is soft-agglomerated in DMAC and easily de-agglomerated by the application of ultrasonic power; therefore, the increased viscosity contributed from additions of PVA and PVP efficiently prevent reagglomeration and sedimentation of the nanopowder. This stabilization mechanism is evidenced by an experimental analysis of zeta potentials and rheology and also by theoretical calculations based on Stokes' law.

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Dispersion stabilization of conductive transparent oxide nanoparticles

Cited by 32 publications

References 36 publications

Water-Based Indium Tin Oxide Nanoparticle Ink for Printed Toluene Vapours Sensor Operating at Room Temperature

Water-Based Indium Tin Oxide Nanoparticle Ink for Printed Toluene Vapours Sensor Operating at Room Temperature

Low‐Temperature Processing of Printed Field‐Effect Transistors from Sublimating‐Stabilizer Derived Oxide Nanodispersions

Dispersion of aluminum‐doped zinc oxide nanopowder in non‐aqueous suspensions

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