Title :
Synthesis, characterizations and gas sensing properties of nanocrystalline In2O3 thick film sensor
Author :
Bari, R.H. ; Jain, Gotan H. ; Chavan, D.N.
Author_Institution :
Dept. of Phys., KRN Commerce & MD Sci. Coll., Jamner, India
fDate :
Nov. 28 2011-Dec. 1 2011
Abstract :
The nanocrystalline powder of In2O3 with cubic structure prepared by a simple hydrothermal decomposition route. The structure and crystal phase of the powder was characterized by X-ray diffraction (XRD), microstructure by Transmission Electron Microscopy (TEM). The results indicated that the indium oxide was cubic with range size 28.5- 65.8 nm. Gas sensing properties of the nanocrystalline In2O3 thick film sensor were tested for various gases in air at static state. The tested results showed that the sensor based on In2O3 nanocrystals exhibited high response towards H2S gas (40 ppm) at an operating temperature 100°C. The selectivity of the sensor elements for H2S gas against different gases was studied. The results on response and recovery time were also discussed.
Keywords :
X-ray diffraction; gas sensors; indium compounds; nanoparticles; nanosensors; thick film sensors; transmission electron microscopy; In2O3; TEM; X-ray diffraction; XRD; crystal phase; crystalline thick film sensor; cubic structure; gas sensing properties; hydrothermal decomposition route; nanocrystalline powder; nanocrystals; size 28.5 nm to 65.8 nm; structure phase; temperature 100 degC; transmission electron microscopy; Actuators; Gas detectors; Materials; Powders; Resistance; Temperature sensors; H2S gas sensor; nanocrystalline In2O3; response time; selectivity; sensitivity;
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.2011.6136980
