Proceedings | |
Highly Sensitive NH3 Sensors Using CVD and Epitaxial Graphene Functionalised with Vanadium(V) Oxide: A Comparative Study | |
Jens Eriksson1  Rositsa Yakimova1  Margus Kodu2  Artjom Berholts2  Tea Avarmaa2  Tauno Kahro2  Indrek Renge2  Harry Alles2  Raivo Jaaniso2  | |
[1] Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden;Institute of Physics, University of Tartu, W. Ostwald Street 1, EE50411 Tartu, Estonia; | |
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 | |
来源: DOAJ |
【 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 used—epitaxial graphene on SiC and CVD graphene on Si/SiO2—and 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】
Unknown