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Vol. 131, Issue 8, August 2011, pp.110-120

 

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Development of NO2 Sensor Using Nickel Oxide

 

a* Vikas Patil, aShailesh Pawar, aManik Chougule, aSanjay Patil, aBharat Raut, aPrasad Godse, bShashwati Sen

*aMaterials Research Laboratory, School of Physical Sciences,

Solapur University, Solapur-413255, M. S., India

Tel.: 0091-0217-2744771, fax: 0091-0217-2744770

bCrystal Technology Section, Bhabha Atomic Research Centre, Mumbai, India

E-mail: drvbpatil@gmail.com

 

 

Received: 2 June 2011   /Accepted: 22 August 2011   /Published: 30 August 2011

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Abstract: In this paper we present the results concerning the characterization of nickel oxide thin films fabricated by sol gel spin coating technique. The growth kinetics and influence of the annealing temperature on the sol gel derived nickel oxide thin films structures, morphologies were investigated by X-ray diffraction and scanning electron microscopy. The effect of the electrical resistivity change of NiO thin film layer in the presence of various oxidizing (NO2) and reducing gases (NH3, H2S, CH3OH, C2H5OH) are used for gas sensing measurements.Nickel oxide layers are used as NO2 and NH3 gas sensitive material in a novel gas sensor element. It can be shown from experimental results that sol gel spin coating technique processing not only allows green materials preparation but also improves the performance and reliability over conventional methods of the production of sensors for continuous environmental monitoring.

 

Keywords: Nickel oxide, NO2 sensor, X-ray diffraction, SEM

 

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