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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