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

fYear

2011

fDate

22-24 Feb. 2011

Firstpage

145

Lastpage

148

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors Applications Symposium (SAS), 2011 IEEE

Conference_Location

San Antonio, TX

Print_ISBN

978-1-4244-8063-0

Type

conf

DOI

10.1109/SAS.2011.5739815

Filename

5739815