Structural, electrical and optical properties of lanthanum-doped barium stannate

B. C. Luo; J. Zhang; J. Wang; P. X. Ran

doi:10.1016/j.ceramint.2014.10.080

Structural, electrical and optical properties of lanthanum-doped barium stannate

B. C. Luo
, J. Zhang
, J. Wang
, P. X. Ran

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

Ba_1-xLa_xSnO₃ compounds were prepared by a conventional solid-state reaction method and their structural, electrical and optical properties were analyzed in this work. X-ray diffraction investigations revealed that La substitution in BaSnO₃ led to the increase of cubic lattice parameters, whereas secondary phase appeared at x=0.1 or above. Evidences of the Sn⁴⁺ state and oxygen vacancies were clearly observed in X-ray photoelectron spectroscopy. The semiconductor behavior in temperature-dependent resistivity was found to obey the variable-range hopping conduction mechanism. With the help of absorption spectra, smaller band-gap energy and larger Urbach tail energy were observed in Ba_0.93La_0.07SnO₃, as compared with Ba_0.97La_0.03SnO₃, which was discussed in the frame of the role of structural disorder.

Original language	English
Pages (from-to)	2668-2672
Number of pages	5
Journal	Ceramics International
Volume	41
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2014.10.080
State	Published - 1 Mar 2015
Externally published	Yes

Keywords

C. Electrical properties
C. Optical properties
Transparent conductive oxides

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10.1016/j.ceramint.2014.10.080

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title = "Structural, electrical and optical properties of lanthanum-doped barium stannate",

abstract = "Ba1-xLaxSnO3 compounds were prepared by a conventional solid-state reaction method and their structural, electrical and optical properties were analyzed in this work. X-ray diffraction investigations revealed that La substitution in BaSnO3 led to the increase of cubic lattice parameters, whereas secondary phase appeared at x=0.1 or above. Evidences of the Sn4+ state and oxygen vacancies were clearly observed in X-ray photoelectron spectroscopy. The semiconductor behavior in temperature-dependent resistivity was found to obey the variable-range hopping conduction mechanism. With the help of absorption spectra, smaller band-gap energy and larger Urbach tail energy were observed in Ba0.93La0.07SnO3, as compared with Ba0.97La0.03SnO3, which was discussed in the frame of the role of structural disorder.",

keywords = "C. Electrical properties, C. Optical properties, Transparent conductive oxides",

author = "Luo, \{B. C.\} and J. Zhang and J. Wang and Ran, \{P. X.\}",

year = "2015",

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doi = "10.1016/j.ceramint.2014.10.080",

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volume = "41",

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TY - JOUR

T1 - Structural, electrical and optical properties of lanthanum-doped barium stannate

AU - Luo, B. C.

AU - Zhang, J.

AU - Wang, J.

AU - Ran, P. X.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Ba1-xLaxSnO3 compounds were prepared by a conventional solid-state reaction method and their structural, electrical and optical properties were analyzed in this work. X-ray diffraction investigations revealed that La substitution in BaSnO3 led to the increase of cubic lattice parameters, whereas secondary phase appeared at x=0.1 or above. Evidences of the Sn4+ state and oxygen vacancies were clearly observed in X-ray photoelectron spectroscopy. The semiconductor behavior in temperature-dependent resistivity was found to obey the variable-range hopping conduction mechanism. With the help of absorption spectra, smaller band-gap energy and larger Urbach tail energy were observed in Ba0.93La0.07SnO3, as compared with Ba0.97La0.03SnO3, which was discussed in the frame of the role of structural disorder.

AB - Ba1-xLaxSnO3 compounds were prepared by a conventional solid-state reaction method and their structural, electrical and optical properties were analyzed in this work. X-ray diffraction investigations revealed that La substitution in BaSnO3 led to the increase of cubic lattice parameters, whereas secondary phase appeared at x=0.1 or above. Evidences of the Sn4+ state and oxygen vacancies were clearly observed in X-ray photoelectron spectroscopy. The semiconductor behavior in temperature-dependent resistivity was found to obey the variable-range hopping conduction mechanism. With the help of absorption spectra, smaller band-gap energy and larger Urbach tail energy were observed in Ba0.93La0.07SnO3, as compared with Ba0.97La0.03SnO3, which was discussed in the frame of the role of structural disorder.

KW - C. Electrical properties

KW - C. Optical properties

KW - Transparent conductive oxides

UR - https://www.scopus.com/pages/publications/84919430341

U2 - 10.1016/j.ceramint.2014.10.080

DO - 10.1016/j.ceramint.2014.10.080

M3 - 文章

AN - SCOPUS:84919430341

SN - 0272-8842

VL - 41

SP - 2668

EP - 2672

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

Structural, electrical and optical properties of lanthanum-doped barium stannate

Abstract

Keywords

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