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Synthesis and optical properties of the (La, Mn)-codoped BiFeO3 films on n+-Si(100) substrates

  • CAS - Shanghai Institute of Technical Physics
  • East China Normal University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

La-doped BiFe0.92Mn0.08O3 films with the composition from 0 to 20% (BLFMx) have been deposited on Si(100) substrates by a sol-gel route. X-ray diffraction analysis shows that the films are polycrystalline and exhibit the pure perovskite phase structure (R3c). The La dopant effects on the surface morphology, dielectric function, and optical transition of the films have been investigated by atomic force microscopy and spectroscopic ellipsometry at room temperature. The dielectric functions of the films have been uniquely extracted by fitting the measured ellipsometric spectra with a three phase layered model (air/film/Si) and the Tauc-Lorentz dielectric function model in the photon energy range of 0.5-3.5 eV. It is found that the optical transitions decrease with increasing La composition, which is crucial for future photoelectric device.

源语言英语
主期刊名Eighth International Conference on Thin Film Physics and Applications
DOI
出版状态已出版 - 2013
活动8th International Conference on Thin Film Physics and Applications, TFPA 2013 - Shanghai, 中国
期限: 20 9月 201323 9月 2013

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
9068
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议8th International Conference on Thin Film Physics and Applications, TFPA 2013
国家/地区中国
Shanghai
时期20/09/1323/09/13

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