中国物理B ›› 2013, Vol. 22 ›› Issue (9): 98103-098103.doi: 10.1088/1674-1056/22/9/098103

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Structural and optical properties of a NaCl single crystal doped with CuO nanocrystals

S. Addalaa, L. Bouhdjera, A. Chalab, A. Bouhdjarb, O. Halimia, B. Boudinea, M. Sebaisa   

  1. a Laboratory of Crystallography, Department of Physics, Mentouri University of Constantine, Constantine 25000, Algeria;
    b Laboratory of Applied Chemistry, Department of Physics, Mohamed Khaider University of Biskra, Biskra 07000, Algeria
  • 收稿日期:2012-07-22 修回日期:2013-03-04 出版日期:2013-07-26 发布日期:2013-07-26
  • 基金资助:
    Project supported by the Crystallography Laboratory of the University of Constantine, Algeria.

Structural and optical properties of a NaCl single crystal doped with CuO nanocrystals

S. Addalaa, L. Bouhdjera, A. Chalab, A. Bouhdjarb, O. Halimia, B. Boudinea, M. Sebaisa   

  1. a Laboratory of Crystallography, Department of Physics, Mentouri University of Constantine, Constantine 25000, Algeria;
    b Laboratory of Applied Chemistry, Department of Physics, Mohamed Khaider University of Biskra, Biskra 07000, Algeria
  • Received:2012-07-22 Revised:2013-03-04 Online:2013-07-26 Published:2013-07-26
  • Contact: L. Bouhdjer E-mail:bouhdjerlazhar@gmail.com
  • Supported by:
    Project supported by the Crystallography Laboratory of the University of Constantine, Algeria.

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摘要： A cupric oxide (CuO) nanocrystal-doped NaCl single crystal and a pure NaCl single crystal are grown by using the Czochralski (Cz) method. A number of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, optical absorption in the UV-visible range, and photoluminescence (PL) spectroscopy are used to characterize the obtained NaCl and NaCl:CuO crystals. It is observed that the average radius of CuO crystallites in NaCl:CuO crystal is about 29.87 nm, as derived from the XRD data analysis. Moreover, FT-IR and Raman spectroscopy results confirm the existence of the monoclinic CuO phase in NaCl crystal. UV-visible absorption measurements indicate that the band gap of the NaCl:CuO crystal is 434 nm (2.85 eV), and it shows a significant amount of blue-shift (ΔEg=1 eV ) in the band gap energy of CuO, which is due to the quantum confinement effect exerted by the CuO nanocrystals. The PL spectrum of the NaCl:CuO shows a broad emission band centred at around 438 nm, which is consistent with the absorption measurement.

关键词: NaCl single crystal, CuO nanocrystals, Raman spectroscopy, photoluminescence

Abstract: A cupric oxide (CuO) nanocrystal-doped NaCl single crystal and a pure NaCl single crystal are grown by using the Czochralski (Cz) method. A number of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, optical absorption in the UV-visible range, and photoluminescence (PL) spectroscopy are used to characterize the obtained NaCl and NaCl:CuO crystals. It is observed that the average radius of CuO crystallites in NaCl:CuO crystal is about 29.87 nm, as derived from the XRD data analysis. Moreover, FT-IR and Raman spectroscopy results confirm the existence of the monoclinic CuO phase in NaCl crystal. UV-visible absorption measurements indicate that the band gap of the NaCl:CuO crystal is 434 nm (2.85 eV), and it shows a significant amount of blue-shift (ΔEg=1 eV ) in the band gap energy of CuO, which is due to the quantum confinement effect exerted by the CuO nanocrystals. The PL spectrum of the NaCl:CuO shows a broad emission band centred at around 438 nm, which is consistent with the absorption measurement.

Key words: NaCl single crystal, CuO nanocrystals, Raman spectroscopy, photoluminescence

中图分类号:  (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)

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