@article{SisLab2858, month = {August}, title = {Characterization of Humidity Sensing of Polymeric GrapheneQuantum-Dots Composites Incorporated with Silver Nanowires}, author = {Nang Dinh Nguyen and Minh Long Lam}, publisher = {Vietnam National University Hanoi}, year = {2017}, pages = {52--60}, journal = {VNU Journal of Science: Mathematics ? Physics}, url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2858/}, 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.} }