Effect of BO 3 3- ions on photoluminescence of CaMoO 4 :Eu 3+ phosphor

Machaba L.A. Letswalo, Leelakrishna Reddy, Avula Balakrishna, Hendrik C. Swart, Odireleng M. Ntwaeaborwa

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2 Citations (Scopus)


A series of CaMoO 4 -BO 3 3- :Eu 3+ phosphors with different concentrations of Eu 3+ (0, 0.5, 1.0, 1.5, 2.0, and 2.5 mol. %) were prepared using the solid-state reaction method. The crystal structure, particle morphology, and photoluminescence (PL) were characterized by x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry, ultraviolet-vis diffuse reflectance, and PL spectroscopy. The XRD patterns showed that CaMo O 4 - B O 3 3 -: E u 3 + phosphor consisted of a pure phase with a tetragonal structure. The introduction of BO 3 3- ions did not affect the crystal structure of the CaMoO 4 :Eu 3+ phosphors, but it slightly influenced the particle morphology and the peak intensity of the red PL from Eu 3+ . As confirmed from the FE-SEM data, the shapes and sizes of the particles were modified by the incorporation of BO 3 3- ions. The bandgap was influenced by the incorporation of BiO 3 3- and Eu 3+ as confirmed from the diffuse reflectance data. The PL intensity was dependent on the concentration of the Eu 3+ , and the red emission due to the f → f transitions of Eu 3+ was enhanced considerably by the incorporation of BO 3 3- ions when the samples were excited at the wavelength of 395 nm using a monochromatized xenon lamp. The effect of BO 3 3- ions on the PL intensity is discussed.

Original languageEnglish
Article number012907
JournalJournal of Vacuum Science and Technology B
Issue number1
Publication statusPublished - 1 Jan 2019

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry


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