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<p>A series of new Sm<sup>3+</sup>-doped Ba<sub>3</sub>Ca<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>F phosphors were synthesized by adopting solid state reaction method. The phase purity, crystal structure, morphology, elemental composition, and luminescence properties of the as synthesized phosphors were comprehensively analyzed. X-ray diffraction pattern confirms the space group <i>P</i>6<sub>3</sub>/<i>m</i> (No.176). Photoluminescence (PL) emission spectra showed characteristic Sm<sup>3+</sup>- lines falling in 540–690&#xa0;nm visible region for the excitation wavelength 401&#xa0;nm. Four intense peaks of emissions attributed to the 4f–4f transitions of Sm<sup>3+</sup> ions were observed. Out of these four peaks, that at 599&#xa0;nm is more dominant. Decay characteristics are used to evaluate non-radiative transition rates and quantum efficiency. Color coordinates reveal orange hue of the prepared phosphor. Scanning Electron Microscopic (SEM)-images, Energy-dispersive X-ray spectroscopy (EDS) analysis followed by elemental mapping further consolidates the evidence for the formation of desired phase in our samples. The Sm<sup>3+</sup>-doped Ba<sub>3</sub>Ca<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>F phosphors may be potential candidate for use as orange-red phosphors for w-LED and display devices. </p>

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Spectroscopic analysis of fluorapatite structured Ba3Ca2(PO4)3F:Sm3+as new orange-red-emitting phosphors

  • 期刊论文

  • 发表日期：

    2025年6月23日

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  • Shruti P. Dhale,
  • Pratik V. Lepse,
  • Esarat Ansari,
  • Shruti Patle,
  • Ashok A. Mistry,
  • Vartika S. Singh,
  • Nilesh S. Ugemuge,
  • S. V. Moharil

摘要

A series of new Sm3+-doped Ba3Ca2(PO4)3F phosphors were synthesized by adopting solid state reaction method. The phase purity, crystal structure, morphology, elemental composition, and luminescence properties of the as synthesized phosphors were comprehensively analyzed. X-ray diffraction pattern confirms the space group P63/m (No.176). Photoluminescence (PL) emission spectra showed characteristic Sm3+- lines falling in 540–690 nm visible region for the excitation wavelength 401 nm. Four intense peaks of emissions attributed to the 4f–4f transitions of Sm3+ ions were observed. Out of these four peaks, that at 599 nm is more dominant. Decay characteristics are used to evaluate non-radiative transition rates and quantum efficiency. Color coordinates reveal orange hue of the prepared phosphor. Scanning Electron Microscopic (SEM)-images, Energy-dispersive X-ray spectroscopy (EDS) analysis followed by elemental mapping further consolidates the evidence for the formation of desired phase in our samples. The Sm3+-doped Ba3Ca2(PO4)3F phosphors may be potential candidate for use as orange-red phosphors for w-LED and display devices.