Carbon monoxide gas-sensing properties of CeO2-WO3 thin films

M. F. Al-Kuhaili; S. M.A. Durrani; I. A. Bakhtiari

doi:10.1179/174328409X443209

Carbon monoxide gas-sensing properties of CeO₂-WO₃ thin films

M. F. Al-Kuhaili, S. M.A. Durrani, I. A. Bakhtiari

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Mixed films of cerium oxide (CeO₂) and tungsten oxide (WO ₃) were deposited on unheated substrates by co-evaporation. The films were annealed in air at 500°C for 2 h. The surface morphology of the films was characterised using atomic force microscopy. The chemical composition was determined using X-ray photoelectron spectroscopy. The optical properties were derived from normal incidence reflectance and transmittance measurements. The films were investigated for the detection of carbon monoxide. The effects of the operating temperature and gas concentration on the performance of the sensor were investigated. The sensor response and recovery times were also measured.

Original language	English
Pages (from-to)	726-731
Number of pages	6
Journal	Materials Science and Technology
Volume	26
Issue number	6
DOIs	https://doi.org/10.1179/174328409X443209
State	Published - 1 Jun 2010

Keywords

CO sensor
CeO
Semiconductor gas sensor
Thin film
WO

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1179/174328409X443209

Cite this

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abstract = "Mixed films of cerium oxide (CeO2) and tungsten oxide (WO 3) were deposited on unheated substrates by co-evaporation. The films were annealed in air at 500°C for 2 h. The surface morphology of the films was characterised using atomic force microscopy. The chemical composition was determined using X-ray photoelectron spectroscopy. The optical properties were derived from normal incidence reflectance and transmittance measurements. The films were investigated for the detection of carbon monoxide. The effects of the operating temperature and gas concentration on the performance of the sensor were investigated. The sensor response and recovery times were also measured.",

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AU - Durrani, S. M.A.

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AB - Mixed films of cerium oxide (CeO2) and tungsten oxide (WO 3) were deposited on unheated substrates by co-evaporation. The films were annealed in air at 500°C for 2 h. The surface morphology of the films was characterised using atomic force microscopy. The chemical composition was determined using X-ray photoelectron spectroscopy. The optical properties were derived from normal incidence reflectance and transmittance measurements. The films were investigated for the detection of carbon monoxide. The effects of the operating temperature and gas concentration on the performance of the sensor were investigated. The sensor response and recovery times were also measured.

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