Nguyen, Nang Dinh and Lam, Minh Long (2017) Characterization of Humidity Sensing of Polymeric GrapheneQuantum-Dots Composites Incorporated with Silver Nanowires. VNU Journal of Science: Mathematics – Physics . pp. 52-60. ISSN 0866-8612
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Abstract
Graphene quantum dots (GQDs) were synthesized and incorporated with polyethylenedioxythiophene:poly(4-styrenesulfonate) (PEDOT:PSS), Ag nanowires (AgNWs) to form a composite that can be used for enhancement of relative humidity (RH%) sensing. The composite films contained bulk heterojunctions of AgNW/GQD and AgNW/PEDOT:PSS. The sensors made from the composites responded well to relative humidity in a range from 10% to 50% at room temperature. With an AgNWs content ranging from 0.2 wt.% to 0.4 wt.% and 0.6 wt.%, the sensitivity of the relative humidity sensing devices based on AgNWs-doped GQDs+PEDOT:PSS composites was increased from 5.5% to 6.5 % and 15.2 %, respectively. The response time of the composite sensors was much improved due to AgNWs doping in the composites. For the 0.6 wt.% AgNWs-doped GQDs+PEDOT:PSS films, the best value of the recovery time was found to be of 30 s.
| Item Type: | Article |
|---|---|
| Subjects: | Engineering Physics |
| Divisions: | Faculty of Engineering Physics and Nanotechnology (FEPN) |
| Depositing User: | Dinh Tu Bui |
| Date Deposited: | 27 Dec 2017 01:23 |
| Last Modified: | 27 Dec 2017 01:23 |
| URI: | http://eprints.uet.vnu.edu.vn/eprints/id/eprint/2858 |
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