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Issue 27, 2017
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Flexible alternating current electroluminescent ammonia gas sensor

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Abstract

In this work, the fabrication and performance of flexible alternating current electroluminescent (AC-EL) devices for ammonia (NH3) detection at room temperature are presented for the first time. The AC-EL gas sensor was fabricated by the screen-printing of a ZnS:Cu,Cl phosphor and PEDOT:PSS sensing layers. The effects of parameters including applied voltage, excitation frequency and waveform on light emission and luminance intensity of the AC-EL gas sensor were systematically investigated. From gas-sensing characterization, the AC-EL gas sensor exhibited very high selectivity and a linear response to NH3 in the concentration range of 100–1000 ppm at room temperature. A sensing mechanism of the EL gas sensor was proposed based on the resistance change of the PEDOT:PSS sensing layer via a charge-transfer process.

Graphical abstract: Flexible alternating current electroluminescent ammonia gas sensor

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Publication details

The article was received on 31 Jan 2017, accepted on 13 Mar 2017 and first published on 17 Mar 2017


Article type: Paper
DOI: 10.1039/C7RA01318C
Citation: RSC Adv., 2017,7, 16885-16889
  • Open access: Creative Commons BY-NC license
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    Flexible alternating current electroluminescent ammonia gas sensor

    J. En-on, A. Tuantranont, T. Kerdcharoen and C. Wongchoosuk, RSC Adv., 2017, 7, 16885
    DOI: 10.1039/C7RA01318C

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