Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia

Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia

Ammonia gas sensing properties of tungsten trioxide thick film sensor was investigated. The doping of noble catalysts such as Pt, Pd, Au enhanced the gas sensitivity. Platinum doping was found to result in highest sensitivity. Remarkable sensitivity enhancement was realized by coating WO3 thick film...

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Bibliographic Details
Main Authors: Vibha Srivastava, Kiran Jain
Format: Article
Language:English
Published: IFSA Publishing, S.L. 2010-06-01
Series:Sensors & Transducers
Subjects:
Ammonia sensor
metal oxide gas sensor
WO3
sensor
thick film
Online Access:http://www.sensorsportal.com/HTML/DIGEST/june_2010/P_637.pdf
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spelling doaj-24150dbce7c8449cae222feedf6b14542020-11-24T21:58:22ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792010-06-011176120128Effect of SiO2 Overlayer on WO3 Sensitivity to AmmoniaVibha Srivastava0Kiran Jain1Electronic Materials Division, National Physical Laboratory, Dr. K.S.Kishnan Marg, New Delhi, India-110012Electronic Materials Division, National Physical Laboratory, Dr. K.S.Kishnan Marg, New Delhi, India-110012Ammonia gas sensing properties of tungsten trioxide thick film sensor was investigated. The doping of noble catalysts such as Pt, Pd, Au enhanced the gas sensitivity. Platinum doping was found to result in highest sensitivity. Remarkable sensitivity enhancement was realized by coating WO3 thick film sensors with SiO2 overlayer. Sol gel process derived silica overlayer increased ammonia gas sensitivity for doped as well as undoped sensor. http://www.sensorsportal.com/HTML/DIGEST/june_2010/P_637.pdfAmmonia sensormetal oxide gas sensorWO3sensorthick film
collection DOAJ
language English
format Article
sources DOAJ
author Vibha Srivastava
Kiran Jain
spellingShingle Vibha Srivastava
Kiran Jain
Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
Sensors & Transducers
Ammonia sensor
metal oxide gas sensor
WO3
sensor
thick film
author_facet Vibha Srivastava
Kiran Jain
author_sort Vibha Srivastava
title Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
title_short Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
title_full Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
title_fullStr Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
title_full_unstemmed Effect of SiO2 Overlayer on WO3 Sensitivity to Ammonia
title_sort effect of sio2 overlayer on wo3 sensitivity to ammonia
publisher IFSA Publishing, S.L.
series Sensors & Transducers
issn 2306-8515
1726-5479
publishDate 2010-06-01
description Ammonia gas sensing properties of tungsten trioxide thick film sensor was investigated. The doping of noble catalysts such as Pt, Pd, Au enhanced the gas sensitivity. Platinum doping was found to result in highest sensitivity. Remarkable sensitivity enhancement was realized by coating WO3 thick film sensors with SiO2 overlayer. Sol gel process derived silica overlayer increased ammonia gas sensitivity for doped as well as undoped sensor.
topic Ammonia sensor
metal oxide gas sensor
WO3
sensor
thick film
url http://www.sensorsportal.com/HTML/DIGEST/june_2010/P_637.pdf
work_keys_str_mv AT vibhasrivastava effectofsio2overlayeronwo3sensitivitytoammonia
AT kiranjain effectofsio2overlayeronwo3sensitivitytoammonia
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