Electrical and CO gas-sensing properties of perovskite-type La0.8Pb0.2Fe0.8Co0.2O3 semiconductive materials

被引：23
作者：
Song, P
Qin, HW
Zhang, L
Liu, X
Huang, SX
Hu, JF [1 ]
Jiang, MH
机构：
[1] Shandong Univ, Dept Phys & Microelect, Jinan 250100, Peoples R China
[2] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2005年 / 368卷 / 1-4期
关键词：
perovskite; CO sensing; citric method; electrical property;
D O I：
10.1016/j.physb.2005.07.015
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Nanocrystalline La0.8Pb0.2Fe0.8Co0.2O3 has been prepared by the citrate method. The structure, electrical and CO gas-sensing properties were investigated. The results demonstrated that La0.8Pb0.2Fe0.8Co0.2O3 is a perovskite phase with the orthorhombic structure, it shows p-type semiconducting properties. In a wide temperature range of 40-200 degrees C, La0.8Pb0.2Fe0.8Co0.2O3-based sensor showed good sensitivity and selectivity to CO gas. An empirical relationship of R = KCH2 alpha with alpha = 0.61 can be obtained. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：204 / 208
页数：5
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