relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3396/
title: Characterization of NH3 sensing properties of P3HT+rGO+CNT composite films made by spin-coating
creator: Lam, Minh Long
creator: Nguyen, Nang Dinh
creator: Tran, Quang Trung
subject: Engineering Physics
description: Thin films of poly(3-hexylthiophene) (P3HT) incorporated with reduced graphene oxide (rGO) and multi-walled carbon nanotubes (CNTs) were prepared by spin-coating technique.  Atomic force microscope (AFM) surface morphology, UV-Vis spectra and NH3 gas sensing of the films were studied. Results showed that the P3HT embedded with a content of 20 wt.% of rGO and 10 % of CNTs (abbreviated to P3GC) resulted in the formation of nanostructured composites,  exhibiting 1.50 nm-roughness surface and a semiconducting material with a bandgap of 1.92eV. These structure and composition of the P3GC film are appropriate for making film sensors, whose resistance changes as a function of gas concentration. Monitoring ammonia gas by the sensors showed that the responding time of the sensing reached a value as fast as 30 s, the response at ammonia gas content of 10 ppm attained a value as large as 0.8% and the relative sensitivity was  of 0.05 %/ppm.
date: 2018-12-15
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3396/1/06-LMLong%20et%20al-CJP-%20Vol%2028-No%204-2018.pdf
identifier:   Lam, Minh Long and Nguyen, Nang Dinh and Tran, Quang Trung  (2018) Characterization of NH3 sensing properties of P3HT+rGO+CNT composite films made by spin-coating.  Communications in Physics, 28  (4).   pp. 369-377.  ISSN 0868-3166