Carbon monoxide gas-sensing properties of CeO                         2                         -ZnO thin films

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

doi:10.1016/j.apsusc.2008.08.058

Carbon monoxide gas-sensing properties of CeO ₂ -ZnO thin films

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

^*Corresponding author for this work

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

90 Scopus citations

Abstract

Mixed films of zinc oxide (ZnO) and cerium oxide (CeO ₂ ) 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 characterized 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)	3033-3039
Number of pages	7
Journal	Applied Surface Science
Volume	255
Issue number	5 PART 2
DOIs	https://doi.org/10.1016/j.apsusc.2008.08.058
State	Published - 30 Dec 2008

Keywords

CO sensor
CeO
Semiconductor gas sensor
Thin film
ZnO

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2008.08.058

Cite this

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title = " Carbon monoxide gas-sensing properties of CeO 2 -ZnO thin films ",

abstract = " Mixed films of zinc oxide (ZnO) and cerium oxide (CeO 2 ) 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 characterized 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.",

keywords = "CO sensor, CeO, Semiconductor gas sensor, Thin film, ZnO",

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AU - Al-Kuhaili, M. F.

AU - Durrani, S. M.A.

AU - Bakhtiari, I. A.

PY - 2008/12/30

Y1 - 2008/12/30

N2 - Mixed films of zinc oxide (ZnO) and cerium oxide (CeO 2 ) 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 characterized 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.

AB - Mixed films of zinc oxide (ZnO) and cerium oxide (CeO 2 ) 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 characterized 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.

KW - CO sensor

KW - CeO

KW - Semiconductor gas sensor

KW - Thin film

KW - ZnO

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