Proceedings | |
Highly Sensitive NH3 Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study | |
Kahro, Tauno1  Berholts, Artjom2  Kodu, Margus3  Eriksson, Jens4  | |
[1] Author to whom correspondence should be addressed.;Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden;Institute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, Estonia;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9â12 September 2018 | |
关键词: ammonia; CVD graphene; epitaxial graphene on SiC; gas sensor; pulsed laser deposition; selectivity; single layer graphene; UV light activation; vanadium(V) oxide; | |
DOI : 10.3390/proceedings2130854 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: mdpi | |
【 摘 要 】
Exceptionally sensitive and selective graphene-based chemiresistive gas sensors were produced as a result of graphene functionalisation with a sub-nanometer V2O5 layer by using the method of pulsed laser deposition. Two different types of graphene were usedâepitaxial graphene on SiC and CVD graphene on Si/SiO2âand both showed remarkable enhancement of sensing properties in terms of response and recovery speed, response magnitude and selectiveness towards NH3 gas. The epitaxial graphene-based sensor was demonstrating the highest relative response towards ammonia amounting to 80% for 0.1 ppm NH3.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201910259383759ZK.pdf | 560KB | download |