Alcohol sensing properties of nanosized thick film WO3 doped with Y2O3

In this paper the response of printed thick-film of WO
3
doped by Y
2
O
3
to organic solvent was studied. Different ratio of doping was prepared and changes of film resistance at different temperature in present of vaporized types of alcohol were observed. The results showed a high sensitivity of the film of 80.1%WO
3
-18.8%Y
2
O
3
to Toluene, Xylene, Methanol, and 2-Propanone (Acetone) at 250, 450, and 550 °C, and higher sensitivity of 94.3%WO
3
-4.7%Y
2
O
3
at 350 °C. Microscopic images of the samples including SEM and TEM were observed. EDX and XRD analysis onto the samples also were done.