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Novel Eu3+-Doped Glasses in the MoO3-WO3-La2O3-B2O3 System: Preparation, Structure and Photoluminescent Properties

  • 0Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, G. Bonchev, str. bld. 11, 1113 Sofia, Bulgaria.
Molecules (basel, Switzerland) +

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October 16, 2024

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October 16, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Novel multicomponent glasses doped with europium oxide (Eu2O3) show promising red light-emitting properties. Increasing tungsten oxide (WO3) content enhances photoluminescence, suggesting their potential as efficient red phosphors for optical applications.

Area Of Science

  • Materials Science
  • Solid State Chemistry
  • Luminescence

Background

  • Multicomponent glasses are explored for advanced optical applications.
  • Tungsten and molybdenum oxides are key components influencing glass properties.
  • Europium (Eu3+) doping is crucial for red emission in phosphors.

Purpose Of The Study

  • To synthesize and characterize novel (50-x)MoO3:xWO3:25La2O3:25B2O3 glasses doped with Eu2O3.
  • To investigate the structural, thermal, optical, and luminescent properties of these glasses.
  • To evaluate their potential as red light-emitting phosphors.

Main Methods

  • Melt-quenching method for glass synthesis.
  • Raman spectroscopy, differential thermal analysis (DTA), and photoluminescence (PL) spectroscopy for property evaluation.
  • UV-vis absorption spectroscopy and refractive index measurements for optical characterization.

Main Results

  • Glasses exhibit high glass transition temperatures.
  • Raman spectra indicate the presence of tetrahedral (MoO4)2- and (WO4)2- units, with increasing WO6 octahedra content.
  • Strong red emission from Eu3+ was observed, with PL intensity increasing with WO3 content.
  • The integrated fluorescence intensity ratio suggests Eu3+ ions occupy non-centrosymmetric sites.

Conclusions

  • The synthesized glasses possess favorable thermal and structural characteristics.
  • Tungsten oxide incorporation enhances the luminescent properties of Eu3+-doped glasses.
  • These glasses are promising candidates for red light-emitting phosphor applications.

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