Structural, electrical and optical properties of lanthanum-doped barium stannate
作者： B.C. Luo , J. Zhang , J. Wang , P.X. Ran
DOI: 10.1016/J.CERAMINT.2014.10.080
关键词:
摘要: Ba1−xLaxSnO3 compounds were prepared by a conventional solid-state reaction method and their structural, electrical optical properties analyzed in this work. X-ray diffraction investigations revealed that La substitution BaSnO3 led to the increase of cubic lattice parameters, whereas secondary phase appeared at x=0.1 or above. Evidences Sn4+ state oxygen vacancies clearly observed photoelectron spectroscopy. The semiconductor behavior temperature-dependent resistivity was found obey variable-range hopping conduction mechanism. With help absorption spectra, smaller band-gap energy larger Urbach tail Ba0.93La0.07SnO3, as compared with Ba0.97La0.03SnO3, which discussed frame role structural disorder.
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