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首页> 外文期刊>Journal of Electronic Materials >Nano-Crystalline Thermally Evaporated Bi2Se3 Thin Films Synthesized from Mechanically Milled Powder
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Nano-Crystalline Thermally Evaporated Bi2Se3 Thin Films Synthesized from Mechanically Milled Powder

机译：从机械研磨粉末合成的纳米结晶热蒸发的BI2SE3薄膜

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摘要

Bi2Se3 powder has been successfully synthesized via mechanical ball milling of bismuth and selenium as starting materials. X-ray diffraction characterization revealed the formation of the rhombohedral and orthorhombic phases of Bi2Se3 material belonging to systems with space groups and Pbnm, respectively. The advantageous last finding is confirmed by the Rietveld refinement of the x-ray diffraction data. Furthermore, the analysis of the x-ray data of thermally deposited thin films revealed that both orthorhombic and rhombohedral phases are coexisting in the layer. The morphology of the ball milled powder was studied by scanning electron microscopy. The phase formation of the material is confirmed by Raman spectroscopy. M-H (Magnetization versus Magnetic field) curve indicates that Bi2Se3 powder has a ferromagnetic behavior. Additionally, absorbance and transmittance measurements were carried out on the obtained thermally evaporated thin films and yielded a band gap of 1.33 eV supporting the potential application of the heterogeneous rhombohedral/orthorhombic Bi2Se3 material in photovoltaics.
机译：Bi2Se3粉末已通过机械球研磨成功合成铋和硒作为原料。 X射线衍射表征揭示了属于具有空间组和PBNM的系统的Bi2Se3材料的菱形和正晶相的形成。通过X射线衍射数据的RIETVELD细化确认了有利的最后发现。此外，热沉积薄膜的X射线数据的分析显示，正交和菱形相在层中共存。通过扫描电子显微镜研究了球碾磨粉末的形态。通过拉曼光谱证实了材料的相形成。 M-H（磁化与磁场）曲线表示Bi2Se3粉末具有铁磁性行为。另外，在所获得的热蒸发的薄膜上进行吸光度和透射率测量，并产生1.33eV的带隙，其支持在光伏中的异质菱形/正极/正交Bi2Se3材料的潜在应用。

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  • 来源
    《Journal of Electronic Materials》 |2017年第8期|共7页
  • 作者

    Amara A.; Abdennouri N.; Drici A.; Abdelkader D.; Bououdina M.; Akkari F. Chaffar; Khemiri N.; Kanzari M.; Bernede J. C.;

  • 作者单位

    Univ Badji Mokhtar dAnnaba Dept Phys LEREC BP 12 Annaba 23000 Algeria;

    Univ Badji Mokhtar dAnnaba Dept Phys LEREC BP 12 Annaba 23000 Algeria;

    Univ Badji Mokhtar dAnnaba Dept Phys LEREC BP 12 Annaba 23000 Algeria;

    Univ Tunis El Manar Ecole Natl Ingn Tunis Lab Photovolta &

    Mat Semicond 1002 Belvedere Tunis Tunisia;

    Univ Bahrain Nanotechnol Ctr POB 32038 Sakhir Bahrain;

    Univ Tunis El Manar Ecole Natl Ingn Tunis Lab Photovolta &

    Mat Semicond 1002 Belvedere Tunis Tunisia;

    Univ Tunis El Manar Ecole Natl Ingn Tunis Lab Photovolta &

    Mat Semicond 1002 Belvedere Tunis Tunisia;

    Univ Tunis El Manar Ecole Natl Ingn Tunis Lab Photovolta &

    Mat Semicond 1002 Belvedere Tunis Tunisia;

    Univ Nantes LAMP 2 Rue Hossinniere BP 92208 F-44322 Nantes 3 France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;材料;
  • 关键词

    X-ray diffraction; optical properties; ball milling; photovoltaic;

    机译：X射线衍射;光学性质;球磨;光伏;

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