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

页码：204 / 208

页数：5

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