Cover Page March-2013-Advanced Materials Letters

Advanced Materials Letters

Volume 4, Issue 3, Pages 196-201, March 2013
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Low Temperature Sensing Of NO2 Gas Using SnO2-ZnO Nanocomposite Sensor

Rakesh Kumar Sonker, Anjali Sharma, Md. Shahabuddin, Monika Tomar, Vinay Gupta

Adv. Mater. Lett., 2013, 4 (3), pp 196-201

DOI: 10.5185/amlett.2012.7390

Publication Date (Web): Jan 21, 2013

Abstract

In the present work an effort has been made to synthesize nanocrystalline composites (NCC) of Zinc oxide and Tin oxide (ZSO) using chemical route for efficient sensing of NO2 gas at lower operating temperature. The structural, microstructural and optical information have been revealed by X-ray diffraction (XRD), Atomic force microscopy (AFM) and UV-Visible spectroscopy respectively. Sensor structure showed a better sensing response (S ~ 6.64×102) at a relatively low operating temperature of 70 °C for 20 ppm NO2 gas with an average response time of about 2 min. The sensing response characteristics for NO2 gas has been compared with corresponding results obtained for pure SnO2 and ZnO thin film based sensor structure.

Keywords

SnO2, nanocomposites, NO2 gas, thin film.

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