Abstract
Vanadium Pentoxide (V2O5) nanorods (NRs) were grown on corning glass substrate for ethanol gas sensing application. The NRs were annealed at 500 °C for one hour in air. Structural characteristics of as-grown and annealed NRs were examined by using X-ray diffraction (XRD) system. The analysis of the (XRD) diffraction patterns revealed an increase in the crystallinity of NRs after annealing along with their preferred orientation towards (001) plane. The density and length of V2O5 NRs were also increased after annealing as shown by the field emission SEM. The Raman spectroscopy result revealed stretching vibrational modes of V2O5. The photoluminescence spectroscopy displayed green emission of V2O5 NRs at 538 nm. For the fabrication of an ethanol gas sensor, Ag electrodes were deposited on the annealed V2O5 NRs by RF reactive sputtering. The current-time measurements were made to observe the gas sensing response of the device at 2 V. The device exhibited remarkable ethanol gas sensing performance with a fast recovery time of 12 s at low working temperature. These findings depicted that the V2O5 NRs can be efficiently used for gas sensing application.
Published Version
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