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.
N1 - Publisher Copyright:
© 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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 - http://www.scopus.com/inward/record.url?scp=84919430341&partnerID=8YFLogxK
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 -