Synthesis and Characterization of Ag/PEDOT:PSS Films Used for NH3 Selective Sensing

Nguyen Nang Dinh, Lam Minh Long, Hoang Thi Thu, Huynh tran My Hoa, Tran Quang Trung
Author affiliations

Authors

  • Nguyen Nang Dinh University of Engineering and Technology, VNUH
  • Lam Minh Long University of Engineering and Technology, VNUH
  • Hoang Thi Thu University of Natural Science, Vietnam National University, Ho Chi Minh City
  • Huynh tran My Hoa University of Natural Science, Vietnam National University, Ho Chi Minh City
  • Tran Quang Trung University of Natural Science, Vietnam National University, Ho Chi Minh City

DOI:

https://doi.org/10.15625/0868-3166/26/2/8518

Keywords:

PEDOT, PSS film, Raman spectra, gas sensing, NH3 gas sensors.

Abstract

Nano-Ag/PEDOT-PSS films were prepared by spin-coating technique. SEM surface morphology, Raman spectra and gas sensing of methanol, humidity and NH3 were studied. The obtained results showed that the resistance of Ag/PEDOT:PSS sheets exposed to gases related to the generation of electrons from the gases adsorption that eliminated holes as the major carriers in PEDOT:PSS. For NH3 gas the largest change of the resistance of Ag/PEDOT:PSS was observed. The less sensitivity of humidity and ethanol sensing was explained due to less dedoping reaction between H2O and ethanol vapor with Ag/PEDOT:PSS, respectively. This suggests a potential application of the nano-Ag/PEDOT-PSS sensors for  the selective monitoring NH3 gas in environment.

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Published

12-09-2016

How to Cite

[1]
N. N. Dinh, L. M. Long, H. T. Thu, H. tran M. Hoa, and T. Q. Trung, “Synthesis and Characterization of Ag/PEDOT:PSS Films Used for NH3 Selective Sensing”, Comm. Phys., vol. 26, no. 2, p. 173, Sep. 2016.

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Vol. 26 No. 2 (2016)

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Papers

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Received 15-07-2016
Accepted 18-08-2016
Published 12-09-2016

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