Title :
Room temperature detection of trace level NO2 gas using SnO2 nanoclusters
Author :
Sharma, Anjali ; Sreenivas, K. ; Gupta, Vinay ; Tomar, Monika
Author_Institution :
Dept. of Phys. & Astrophys., Univ. of Delhi, Delhi, India
Abstract :
Nanoclusters of SnO2 were synthesized using sol gel technique. The solution containing SnO2 nanoclusters was spin coated on Pt inert digital electrodes/glass substrate to deposit thin film of semiconducting nanoclusters of SnO2 (200nm). TEM images and electron diffraction pattern were studied to find out the size and polycrystalline nature of Tin oxide nanoclusters. The SnO2 thin film was used for NO2 gas sensing and was found to be highly sensitive to detect ultra-low concentrations (ppb range) of NO2 at room temperature.
Keywords :
electron diffraction; gas sensors; nanofabrication; nanostructured materials; semiconductor growth; semiconductor materials; semiconductor thin films; sol-gel processing; spin coating; thin film sensors; transmission electron microscopy; NO2; SnO2; TEM image; electron diffraction pattern; gas sensor; inert digital electrodes-glass substrate; polycrystalline nature; room temperature detection; semiconducting nanoclusters; sol gel technique; spin coating; temperature 293 K to 298 K; thin film deposition; tin oxide nanoclusters; ultra low concentration; Gas detectors; Nanoparticles; Resistance; Sensor phenomena and characterization; Temperature sensors; NO2; gas sensor; nanoclusters SnO2; sol gel; toxic gas;
Conference_Titel :
Sensors Applications Symposium (SAS), 2011 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-8063-0
DOI :
10.1109/SAS.2011.5739815
