Title :
Gas sensing studies of thick and thin films of WO3
Author :
Thakur, K.K. ; Jain, G.H.
Author_Institution :
Dept. of Phys., GMD Arts, BW Commerce & Sci. Coll., Sinnar, India
fDate :
Nov. 28 2011-Dec. 1 2011
Abstract :
Screen-printing technique and spray pyrolysis method were used to prepare thick and thin films of WO3 (Tungsten Oxide). The gas sensing performance of the both films were tested for various gases at different temperatures and results are correlated. The WO3 thick film showed good response (S=191.31) to H2S at 3500C and WO3 thin film showed poor response (S=6.48) at 3500C for 400 ppm. The gas response, selectivity and thermal stability of the sensor were measured and presented.
Keywords :
gas sensors; thermal stability; thick films; thin films; tungsten compounds; WO3; gas sensing study; screen-printing technique; selectivity; spray pyrolysis method; thermal stability; thick film; thin film; Actuators; Gases; Sensitivity; Temperature measurement; Temperature sensors; Thick films; H2S gas sensor; Sensitivity and Selectivity; WO3 thick film; WO3 thin film;
Conference_Titel :
Sensing Technology (ICST), 2011 Fifth International Conference on
Conference_Location :
Palmerston North
Print_ISBN :
978-1-4577-0168-9
DOI :
10.1109/ICSensT.2011.6136983
