Studies on electrical properties and CO-sensing characteristics of La0.9□0.1FeO3

被引：13
作者：
Mu Zonggang [1 ]
Zhang Ling [2 ]
Li Xifeng [1 ]
Hu Jifan [3 ,4 ]
机构：
[1] Univ Jinan, Shandong Prov Key Lab Fluorine Chem & Chem Mat, Sch Chem & Chem Engn, Jinan 250022, Peoples R China
[2] Univ Jinan, Sch Resources & Evironm, Jinan 250022, Peoples R China
[3] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China
[4] Shandong Univ, Sch Phys & Microelect, Jinan 250100, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2011年 / 29卷 / 04期
关键词：
La-0.9 square D0.1FeO3; perovskite structure; CO-sensing; electrical properties; rare earths; GAS SENSORS; THIN-FILMS; PEROVSKITE; CERAMICS; OXIDE;
D O I：
10.1016/S1002-0721(10)60463-2
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Semiconducting sensors offer an inexpensive and simple method for monitoring gases. Sensors based on the ABO(3)-type composite oxides materials have an advantage of high stability. The perovskite structures of these compounds are preserved, when an A-site deficiency of some perovskite structure compounds was formed. However, they exhibit particular physical properties. In this paper, La-0.9 square 0.1FeO3 powder with an orthorhombic perovskite phase was prepared by sol-gel method. The electrical properties and CO-sensing characteristics of the La-0.9 square 0.1FeO3 were also investigated. The results demonstrated that the La-0.9 square 0.1FeO3 was a p-type semiconductor material. Compared with LaFeO3, the conductance of La-0.9 square 0.1FeO3 was better than that of LaFeO3. The sensor based on La-0.9 square 0.1FeO3 showed excellent CO gas-sensing characteristics.
引用
收藏
页码：374 / 377
页数：4
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