Gas-sensing and electrical properties of perovskite structure p-type barium-substituted bismuth ferrite

被引：108

作者：

Dong, Guangzhi ^{[1
]}

Fan, Huiqing ^{[1
]}

Tian, Hailin ^{[1
]}

Fang, Jiawen ^{[1
]}

Li, Qiang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Sch Mat Sci & Engn, Xian 710072, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 38期

关键词：

THIN-FILM HETEROSTRUCTURES; HIERARCHICAL NANOSTRUCTURES; SENSORS; PERFORMANCE; OXIDES; NANOPARTICLES;

D O I：

10.1039/c5ra01869b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pure and Ba-substituted bismuth ferrite (BiFeO3, BFO) powders were successfully synthesized via a sol-gel method. The effects of the Ba-substitution on the morphology, gas-sensing and electrical properties of BFO were studied. The gas-sensing tests show that the sensor based on Bi0.9Ba0.1FeO2.95 (BBFO10) has high sensitivity, quick response, effective selectivity and excellent long-time stability. The conduction mechanism and gas-sensing mechanism of a BBFO10 sample were investigated by the impedance spectroscopy and it was found that the conduction is dominated by p-type hole conduction. The conductivity of the sensor is dependent on the oxygen partial pressures and the type of gas atmosphere. The enhanced gas-sensing performances of the BBFO10 sensor are attributed to the higher oxygen vacancy concentration which was induced by the substitution of Bi3+ ion by an aliovalent Ba2+ ion at the A-site of the perovskite structure.

引用

页码：29618 / 29623

页数：6

共 30 条

[1] Fast economical synthesis of Fe-doped ZnO hierarchical nanostructures and their high gas-sensing performance [J].

Cai, Yu ;

Fan, Huiqing ;

Xu, Mengmeng ;

Li, Qiang ;

Long, Changbai .

CRYSTENGCOMM, 2013, 15 (36) :7339-7345

[2] Physics and Applications of Bismuth Ferrite [J].

Catalan, Gustau ;

Scott, James F. .

ADVANCED MATERIALS, 2009, 21 (24) :2463-2485

[3] α-Fe2O3 nanotubes in gas sensor and lithium-ion battery applications [J].

Chen, J ;

Xu, LN ;

Li, WY ;

Gou, XL .

ADVANCED MATERIALS, 2005, 17 (05) :582-+

[4] Application of bismuth ferrite protonic conductor for ammonia gas detection [J].

Dziubaniuk, Malgorzata ;

Bujakiewicz-Koronska, Renata ;

Suchanicz, Jan ;

Wyrwa, Jan ;

Rekas, Mieczyslaw .

SENSORS AND ACTUATORS B-CHEMICAL, 2013, 188 :957-964

[5] Comment on "Epitaxial BiFeO3 multiferroic thin film heterostructures" [J].

Eerenstein, W ;

Morrison, FD ;

Dho, J ;

Blamire, MG ;

Scott, JF ;

Mathur, ND .

SCIENCE, 2005, 307 (5713) :1203-1203

[6]

Fang L. A., 2010, APPL PHYS LETT, V97

[7] Room-temperature solid state synthesis of ZnO/α-Fe2O3 hierarchical nanostructures and their enhanced gas-sensing properties [J].

Huang, Limei ;

Fan, Huiqing .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 171 :1257-1263

[8] Highly absorbing Cu-In-O thin films for photovoltaic applications [J].

Khemiri, N. ;

Akkari, F. Chaffar ;

Kanzari, M. ;

Rezig, B. .

THIN SOLID FILMS, 2008, 516 (20) :7031-7035

[9] Highly sensitive and selective gas sensors using p-type oxide semiconductors: Overview [J].

Kim, Hyo-Joong ;

Lee, Jong-Heun .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 192 :607-627

[10]

Knauth P, 2002, J AM CERAM SOC, V85, P1654, DOI 10.1111/j.1151-2916.2002.tb00334.x

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