Formaldehyde-sensing characteristics of perovskite La0.68Pb0.32FeO3 nano-materials

被引：50

作者：

Zhang, L

Hu, JF ^{[1
]}

Song, P

Qin, HW

Liu, XD

Jiang, MH

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Univ, Sch Phys & Microelect, Jinan 250100, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 370卷 / 1-4期

关键词：

perovskite structure; formaldehyde-sensing; sensitivity;

D O I：

10.1016/j.physb.2005.09.020

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

La0.68Pb0.32FeO3 ceramic powder with orthogonal perovskite phase was prepared using sol-gel method. The formaldehyde-sensing characteristics for the sample were examined between 40 and 360 degrees C. The experimental results revealed that the sensor based on the sample La0.68Pb0.32FeO3 shows excellent gas-sensing characteristics to formaldehyde gas and the operating temperature is very low. With increasing concentration of formaldehyde, the resistance of the sensor based on the sample La-0.68Pb0.32FeO3 increases. The response and recovery times for the sample to formaldehyde gas are about 25 and 20 s, respectively. (c) 2005 Elsevier B.V. All rights reserved.

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页码：259 / 263

页数：5

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