Bulletin of the Korean Chemical Society

  • 제34권9호
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  • Pages.2781-2786
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  • 2013
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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AC Complex Impedance Study on the Resistive Humidity Sensors with Ammonium Salt-Containing Polyelectrolyte using a Different Electrode Pattern

  • Cha, Jae-Ryung (Department of Nanobiomedical Science and WCU Research Center of Nanobiomedical Science, Dankook University) ;
  • Gong, Myoung-Seon (Department of Nanobiomedical Science and WCU Research Center of Nanobiomedical Science, Dankook University)
  • 투고 : 2013.04.08
  • 심사 : 2013.06.17
  • 발행 : 2013.09.20
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초록

We examined the effect of electrode fingers and gaps of coplanar interdigitated electrode (IDE) structures to characterize the ammonium salt-containing polyelectrolyte film of resistance-based humidity sensors. IDEs designed for this purpose were flexible gold electrodes deposited on a polyimide substrate using a printing process because the geometry presents a potential for tunable sensitivity over other electrode designs. The basic design of the sensors consisted of IDEs with a different number of electrode fingers such as 3, 4, and 5 and gap sizes of 310, 360, 410, and $460{\mu}m$. Details of the AC complex impedance characteristics such as the Nyquist plot, Bode plot, and activation energy based on electrode construction were investigated.

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