Room temperature operation of ITO nano‐crystal gas sensor

Koo, Jieun; Park, Seunghwan; Lee, Woong; Cho, Youngji; Lee, Hyojong; Lee, Sang‐Tae; Chang, Jiho

doi:10.1002/pssc.201200617

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…It has already been demonstrated that the screen printing of organometallic precursor paste followed by firing at high temperatures (600 °C) for a relatively long time (for 40 min at optimum for ITO crystallization) can be utilized for sensor fabrication [ 6 ]. The latest efforts demonstrated the suitability of screen printing for pastes directly composed from ITO nanocrystals and binders for sensor fabrication [ 23 , 24 ].…”

Section: Introductionmentioning

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: Introductionmentioning

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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show abstract

Study on the accuracy of Indium-Tin-Oxide (ITO) nanoparticle sensor based on solvent detection characteristics in water

An,

Lee,

Cho

et al. 2024

J. Korean Phys. Soc.

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Optimization of Printing Process for the Development of Metal-oxide Resistivity Sensor

Lee¹,

Koo²,

Lee³

et al. 2016

Journal of the Korean Institute of Electrical and Electronic Ma

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Abstract:In this paper, we have studied about the optimum fabrication condition of the printed Indium Tin Oxide (ITO) layers for the electrical resistance-type sensor application. We have investigated on the substrates surface treatments, mixing ratio of organic binder/ITO powder, and viscosity of the printing paste to determine the optimum condition of the screen printed ITO layer. Also, we found that the printing condition is closely related with the sensor performance. To know the feasibility of printed ITO layer as an electrical resistance-type sensor, we have fabricated the ITO sensors with a printed and sputtered ITO layers. The printed ITO films revealed 10 2 times higher sensitivity than the sputtered ITO layer. Also, the sputtered ITO layer exhibited an operating temperature of 127℃ at the operating voltage of 5 V. While, in case of the printed ITO layer showed the operating temperature of 27.6℃ in high operating voltage of 30 V. We found that the printed ITO layer is suitable for the various sensor applications.

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Room temperature operation of ITO nano‐crystal gas sensor

Cited by 4 publications

References 13 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

Study on the accuracy of Indium-Tin-Oxide (ITO) nanoparticle sensor based on solvent detection characteristics in water

Optimization of Printing Process for the Development of Metal-oxide Resistivity Sensor

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