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

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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Author Biographies

Nguyen Nang Dinh, University of Engineering and Technology, VNUH

Faculty of Engineering Physics and Nanotechnology

Lam Minh Long, University of Engineering and Technology, VNUH

Faculty of Engineering Physics and Nanotechnology

Hoang Thi Thu, University of Natural Science, Vietnam National University, Ho Chi Minh City

Faculty of Physics

Huynh tran My Hoa, University of Natural Science, Vietnam National University, Ho Chi Minh City

Faculty of Physics

Tran Quang Trung, University of Natural Science, Vietnam National University, Ho Chi Minh City

Faculty of Physics

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Published

12-09-2016

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

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