eprintid: 2004
rev_number: 9
eprint_status: archive
userid: 314
dir: disk0/00/00/20/04
datestamp: 2016-12-08 03:40:11
lastmod: 2016-12-08 03:40:49
status_changed: 2016-12-08 03:40:11
type: article
metadata_visibility: show
creators_name: Lam, Minh Long
creators_name: Nguyen, Nang Dinh
creators_name: Tran, Quang Trung
creators_id: dinhnn@vnu.edu.vn
title: Synthesis and Characterization of Polymeric Graphene-Quantum-Dots based Nanocomposites for Humidity Sensing
ispublished: pub
subjects: Phys
subjects: isi
divisions: fac_physic
abstract: Graphene quantum dots (GQDs) were synthesized and incorporated with polyethylenedioxythiophene: poly(4-styrenesulfonate) (PEDOT:PSS) and carbon nanotube (CNT) to form a composite that can be used for humidity sensors. The 600 nm-thick composite films contained bulk heterojunctions of CNT/GQD and CNT/PEDOT:PSS. The sensors made from the composites responded well to humidity in a range from 60 to 80% at room temperature and atmospheric pressure. With a CNT content of 0.4 wt.% (GPC-1) to 0.8 wt.% (GPC-2) and 1.2 wt.% (GPC-3), the sensitivity of the humidity sensing devices based on CNT-doped graphene quantum dot-PEDOT:PSS composites was increased from 4.5% (GPC-1) to 9.0 % (GPC-1) and 11.0 % (GPC-2), respectively. The fast response time of the GPC sensors was about 20 s and it was much improved due to CNTs doping in the composites. The best value of the recovery time was found to be of 40 s, for the GPC composite film doped with 1.2 wt.% CNT content.
date: 2016-04-15
date_type: published
publisher: Hindawi
id_number: Article ID 5849018
contact_email: dinhnn@vnu.edu.vn
full_text_status: restricted
publication: J. Nanomaterials
volume: 2016
refereed: TRUE
issn: 1687-4129
funders: NAFOSTED
citation:   Lam, Minh Long and Nguyen, Nang Dinh and Tran, Quang Trung  (2016) Synthesis and Characterization of Polymeric Graphene-Quantum-Dots based Nanocomposites for Humidity Sensing.  J. Nanomaterials, 2016 .    ISSN 1687-4129     
document_url: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2004/1/05-Sensor-LML-NNDinh-JNM-4-2016.pdf