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

被引：76

作者：

Al-Kuhaili, M. F. ^{[1
]}

Durrani, S. M. A. ^{[1
]}

Bakhtiari, I. A. ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Phys, Dhahran 31261, Saudi Arabia

来源：

APPLIED SURFACE SCIENCE | 2008年 / 255卷 / 05期

关键词：

Thin film; CO sensor; ZnO; CeO2; Semiconductor gas sensor;

D O I：

10.1016/j.apsusc.2008.08.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mixed films of zinc oxide (ZnO) and cerium oxide (CeO2) were deposited on unheated substrates by co-evaporation. The films were annealed in air at 500 degrees 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. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3033 / 3039

页数：7

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