title: Gas Sensing Properties of Epitaxial LaBaCo2O5.5+δ Thin Films.
abstract: Chemical reactivity and stability of highly epitaxial mixed-conductive LaBaCo2O5.5+δ (LBCO) thin films on (001) LaAlO3 (LAO) single-crystalline substrates, fabricated by using pulsed laser deposition system, were systematically investigated. Microstructure studies from x-ray diffraction indicate that the films are c-axis oriented with the interface relationship of [100]LBCO//[100]LAO and (001)LBCO//(001)LAO. LBCO thin films can detect the ethanol vapor concentration as low as 10 ppm and the response of LBCO thin film to various ethanol vapor concentrations is very reliable and reproducible with the switch between air and ethanol vapor. Moreover, the fast response of the LBCO thin film, as the p-type gas sensor, is better than some n-type oxide semiconductor thin films and comparable with some nanorods and nanowires. These findings indicate that the LBCO thin films have great potential for the development of gas sensors in reducing/oxidizing environments.
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education &International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: M
authors.initials: M
authors.lastname: Liu
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education &International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: S P
authors.initials: SP
authors.lastname: Ren
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education &International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: R Y
authors.initials: RY
authors.lastname: Zhang
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education &International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Xue
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: C R
authors.initials: CR
authors.lastname: Ma
authors.affiliation: School of Science, Xi'an Technological University, Xi'an 710032, P. R. China.
authors.forename: M L
authors.initials: ML
authors.lastname: Yin
authors.affiliation: Department of Physics and Astronomy, University of Texas at San Antonio, TX 78249, United States.
authors.forename: X
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Physics and Astronomy, University of Texas at San Antonio, TX 78249, United States.
authors.forename: S Y
authors.initials: SY
authors.lastname: Bao
authors.affiliation: Department of Physics and Astronomy, University of Texas at San Antonio, TX 78249, United States.|The Texas Center for Superconductivity, University of Houston, Houston, Texas 77204, United States.
authors.forename: C L
authors.initials: CL
authors.lastname: Chen