Evaluation of response characteristics of resistive oxygen sensors using Ce0.9Zr0.1O2 thick film by pressure modulation method

被引：6
作者：
Izu, Noriya [1 ]
Itoh, Toshio [1 ]
Shin, Woosuck [1 ]
Matsubara, Ichiro [1 ]
Murayama, Norirnitsu [1 ]
机构：
[1] Adv Mfg Res Inst, Natl Inst Adv Ind Sci & Technol, Sensor Integrat Grp, Moriyama Ku, Nagoya, Aichi 4638560, Japan
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 130卷 / 01期
关键词：
oxygen gas sensor; ceria; zirconia; fast response; automobile; exhaust gas;
D O I：
10.1016/j.snb.2007.09.016
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Response properties of resistive oxygen sensors using zirconia-doped ceria (Ce0.9Zr0.1O2) thick film were investigated using the pressure modulation method (PMM). This method measures the amplitude of the output of an oxygen sensor under periodic changes in oxygen partial pressure. The PMM results revealed that the resistive oxygen sensor using our Ce0.9Zr0.1O2 thick film responds precisely when the oxygen partial pressure periodically changes at a period of 50ms or more. The rate-limiting step of the response of the Ce0.9Zr0.1O2 thick film was the diffusion of oxygen vacancies. The diffusion coefficients (D) of the oxygen vacancies were calculated from the PMM results, and were determined almost the same as those for CeO2 thick films. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：466 / 469
页数：4
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