Article: Gas sensing performance of nanostructured ZnO thick film resistors Journal: International Journal of Nanoparticles (IJNP) 2012 Vol.5 No.2 pp.126 - 135 Abstract: Nanostructured ZnO powder was synthesised by a simple chemical route. The material was characterised by XRD, UV, SEM and TEM techniques. XRD and TEM studies confirm that a nanostructured ZnO is obtained by using simple chemical route. The nanopowder was fired at an optimised temperature of 200°C for 1/2 h. The prepared powder had crystallite size in the range from 19 to 41 nm. Thick films of synthesised ZnO powder were prepared by screen printing technique. The gas sensing performances of these films for various gases were tested. Films showed highest response to H2S (100 ppm) gas at 300°C temperature with poor responses to others. The quick response and fast recovery are the main features of this sensor. The effects of microstructure, operating temperature and gas concentration on the gas response, selectivity, response time and recovery time of the sensor in the presence of H2S gas and others were studied and discussed. Inderscience Publishers - linking academia, business and industry through research

Title: Gas sensing performance of nanostructured ZnO thick film resistors

Authors: S.D. Shinde; V.B. Gaikwad; G.E. Patil; D.D. Kajale; G.H. Jain

Addresses: Material Science Laboratory, K.T.H.M. College, Nasik 422 002, India. ' Material Science Laboratory, K.T.H.M. College, Nasik 422 002, India. ' Material Science Laboratory, Arts, Commerce and Science College, Nandgaon 423 106, India. ' Material Science Laboratory, Arts, Commerce and Science College, Nandgaon 423 106, India. ' Material Science Laboratory, Arts, Commerce and Science College, Nandgaon 423 106, India

Abstract: Nanostructured ZnO powder was synthesised by a simple chemical route. The material was characterised by XRD, UV, SEM and TEM techniques. XRD and TEM studies confirm that a nanostructured ZnO is obtained by using simple chemical route. The nanopowder was fired at an optimised temperature of 200°C for 1/2 h. The prepared powder had crystallite size in the range from 19 to 41 nm. Thick films of synthesised ZnO powder were prepared by screen printing technique. The gas sensing performances of these films for various gases were tested. Films showed highest response to H₂S (100 ppm) gas at 300°C temperature with poor responses to others. The quick response and fast recovery are the main features of this sensor. The effects of microstructure, operating temperature and gas concentration on the gas response, selectivity, response time and recovery time of the sensor in the presence of H₂S gas and others were studied and discussed.

Keywords: nanostructured ZnO; zinc oxide; TEM; sensitivity; selectivity; H2S gas sensors; gas sensing performance; thick film resistors; nanopowders; nanotechnology; microstructure; operating temperature; gas concentration; hydrogen sulphide.

DOI: 10.1504/IJNP.2012.046239

International Journal of Nanoparticles, 2012 Vol.5 No.2, pp.126 - 135

Received: 11 Feb 2011
Accepted: 15 Jun 2011
Published online: 20 Aug 2014 *

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Title: Gas sensing performance of nanostructured ZnO thick film resistors

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