Title :
Alcohol sensing properties of nanosized thick film WO3 doped with Y2O3
Author :
Abadi, M. H Shahrokh ; Hamidon, M.N. ; Shaari, Abdul Halim ; Abdullah, Norhafizah ; Misron, Norhisam ; Salleh, Abu Bakar ; Wagiran, Rahman ; Malekzadeh, Mina
Author_Institution :
Electr. & Electron. Dept., Univ. Putra Malaysia, Serdang
Abstract :
In this paper the response of printed thick-film of WO3 doped by Y2O3 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%WO3-18.8%Y2O3 to Toluene, Xylene, Methanol, and 2-Propanone (Acetone) at 250, 450, and 550degC, and higher sensitivity of 94.3%WO3-4.7%Y2O3 at 350degC. Microscopic images of the samples including SEM and TEM were observed. EDX and XRD analysis onto the samples also were done.
Keywords :
X-ray chemical analysis; X-ray diffraction; doping; electrical resistivity; gas sensors; scanning electron microscopy; thick film sensors; thick films; transmission electron microscopy; tungsten compounds; yttrium compounds; 2-propanone; EDX; SEM; TEM; WO3:Y2O3; XRD; alcohol sensing properties; doping; methanol; organic solvent; printed thick-film; resistance; temperature 250 degC; temperature 350 degC; temperature 450 degC; temperature 550 degC; toluene; xylene; Conductivity; Doping; Electrodes; Gas detectors; Methanol; Scanning electron microscopy; Solvents; Substrates; Temperature sensors; Thick films; Gas Sensor; Thick Film; Tungsten Oxide; Yttria;
Conference_Titel :
Semiconductor Electronics, 2008. ICSE 2008. IEEE International Conference on
Conference_Location :
Johor Bahru
Print_ISBN :
978-1-4244-3873-0
Electronic_ISBN :
978-1-4244-2561-7
DOI :
10.1109/SMELEC.2008.4770340
