%0 Journal Article
%@ 0868-3166
%A Lam, Minh Long
%A Nguyen, Nang Dinh
%A Tran, Quang Trung
%A Hoang Thi Thu,
%A Huynh Tran My Hoa,
%D 2016
%F SisLab:2024
%I VAST
%J Communications in Physicss
%N 2
%P 173-180
%T Synthesis and Characterization of Ag/PEDOT:PSS films used  for NH3 selective sensing
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2024/
%V 26
%X 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, recpectively. This suggests a potential application of the nano-Ag/PEDOT-PSS sensors for  the selective monitoring NH3 gas in environment.