Synthesis and luminescence properties of ZnS and metal (Mn, Cu)-doped-ZnS ceramic powder

Solid State Sciences (Impact Factor: 1.67). 01/2012; DOI: 10.1016/j.solidstatesciences.2011.12.005

ABSTRACT a b s t r a c t ZnS and metal (Mn, Cu)-doped-ZnS were successfully prepared by wet chemical synthetic route. The understanding of substituted metal ions (Mn, Cu) into ZnS leads to transfer the luminescent centre by small amount of metal dopant (Mn, Cu). Fourier transform infrared and X-ray diffraction were used to determine chemical bonding and crystal structure, respectively. It showed that small amount of metal (Mn, Cu) can be completely substituted into ZnS lattice. X-ray fluorescence was used to confirm the existence of metal-doped ZnS. Scanning electron microscope revealed that their particles exhibits blocky particle with irregular sharp. Laser confocal microscope and photoluminescence spectroscopy showed that ZnS and metal-doped-ZnS exhibited intense, stable, and tunable emission covering the blue to red end of the visible spectrum. ZnS, Mn-doped-ZnS and Cu-doped-ZnS generated blue, yellow and green color, respectively.

1 Bookmark
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, the wurtzite-type Fe/Mn co-doped ZnS nanowires were prepared by a simple hydrothermal method at 180 °C without any surface-active agent. The results showed that both the Fe2+ and Mn2+ ions were incorporated into the ZnS host and the maximum concentration of the Mn2+ ions in the ZnS:Fe2+(1%) nanowires was 5.1%. After adding Mn2+ ions into the ZnS:Fe2+(1%) nanowires, the emission peak centered at 2.14 eV corresponding to the Mn2+4T1-6A1 transition can be observed. As the Mn2+ doped ratio increased, the concentration quenching effect can be observed. The ferromagnetism property of the ZnS:Fe2+Mn2+ nanowires was observed around room temperature, which became weaker as the Mn2+ doped ratio increased.
    Superlattices and Microstructures 05/2013; · 1.98 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Submicronparticles of ZnS were synthesized at low temperature using a top-down fabrication process by ultrasonication. The obtained ZnS particles were characterized by scanning transmission electron microscopy (S/TEM), energy dispersive X-ray analysis (EDAX), Fourier transform infra-red spectroscopy (FTIR), UV–visible spectrophotometry (UV), and photoluminescence spectroscopy (PL). The results showed that the formed products are ZnS particles with size less than 200 nm and exhibit a strong luminescence in the blue region. The origin of the blue emission could be attributed to the quantum size effect of ZnS nanocrystals.
    Materials Letters 05/2014; 129:8-11. · 2.27 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Nanoparticles of undoped and metal (Sn 2+ and Cu 2+) doped individually and combined with ZnS have been synthesised using triethylamine by precipitation. X-ray diffraction and optical absorption measurements have been made on nanoparticles of pure and metal doped ZnS. The studies reveal that the metal doped ZnS does not modify the cubic structure and the average crystallite size is found to be in the range of 6 -15 nm. The undoped ZnS nanoparticles have higher optical absorption in the visible region than the metal doped ZnS and the allowed direct band gap energy is found to increase in metal doped samples.
    Walailak Journal of Science and Technology. 08/2014; 11(9):795-801.


Available from
Jun 2, 2014