Vol. 26 No. 2 (2016)
Papers

Synthesis and Characterization of Ag/PEDOT:PSS Films Used for NH\(_3\) Selective Sensing

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

Published 12-09-2016

Keywords

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

How to Cite

Dinh, N. N., Long, L. M., Thu, H. T., Hoa, H. tran M., & Trung, T. Q. (2016). Synthesis and Characterization of Ag/PEDOT:PSS Films Used for NH\(_3\) Selective Sensing. Communications in Physics, 26(2), 173. https://doi.org/10.15625/0868-3166/26/2/8518

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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