The role of grain size in response of Sno 2- and In 2o 3-based conductometric gas sensors
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KOROTCHENKOV, Ghenadii, CHO, Beongki, BRYNZARI, Vladimir. The role of grain size in response of Sno 2- and In 2o 3-based conductometric gas sensors. In: Advanced Materials Research, Ed. 1, 12-13 aprilie 2012, Hong Kong. Bäch: Trans Tech Publications Ltd, 2012, Vol. 486, pp. 153-159. ISBN 978-303785386-3. ISSN 10226680. DOI: https://doi.org/10.4028/www.scientific.net/AMR.486.153
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Advanced Materials Research
Vol. 486, 2012
Conferința "International Conference on X-Ray and related Technique in Research and Industry"
1, Hong Kong, China, 12-13 aprilie 2012

The role of grain size in response of Sno 2- and In 2o 3-based conductometric gas sensors

DOI:https://doi.org/10.4028/www.scientific.net/AMR.486.153

Pag. 153-159

Korotchenkov Ghenadii1, Cho Beongki1, Brynzari Vladimir2
 
1 Gwangju Institute of Science and Technology, Gwangju,
2 Moldova State University
 
 
Disponibil în IBN: 6 martie 2024


Rezumat

Basing on the experimental results, obtained while studying both structural and gas sensing properties of the SnO2 and In2O3 films deposited by spray pyrolysis method, it was analyzed the influence of the crystallites size on the response of the SnO2- and In2O3-based thin film gas sensors. It was confirmed that that the grain size is one of the most important parameters of metal oxides, controlling almost all operating characteristics of the solid state gas sensors. However, it was shown that the decrease of the grain size is not a universal decision contributing to the improvement of sensor response. The decrease of the grain size could be accompanied either by the improvement, or the worsening of gas sensor operating characteristics. 

Cuvinte-cheie
Gas-sensing effects, Grain size, In2O3, metal oxides, SnO2, spray pyrolysis, thin films