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Related Experiment Video

Updated: May 29, 2026

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors
07:03

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Published on: November 15, 2016

New SrAl2B2O7:Eu2+, Mn2+ phosphors for white light-emitting diodes.

Liya Zhou1, Linghong Yi, Xiaoming Feng

  • 1School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China. zhouliyatf@163.com

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|September 17, 2011
PubMed
Summary
This summary is machine-generated.

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Eu(2+) and Mn(2+) co-doped strontium aluminum borate phosphors were synthesized for white LED applications. Optimized doping achieved color coordinates close to NTSC standards, demonstrating potential for efficient white light-emitting diodes.

Area of Science:

  • Materials Science
  • Solid-state Chemistry
  • Luminescence

Background:

  • Strontium aluminum borate (SrAl2B2O7) is a potential host material for phosphors.
  • Co-doping with Eu(2+) and Mn(2+) ions can lead to tunable luminescence properties.
  • Developing efficient white light-emitting diodes (LEDs) is crucial for energy-saving illumination.

Purpose of the Study:

  • To synthesize and characterize Eu(2+) and Mn(2+) co-doped SrAl2B2O7 phosphors.
  • To investigate the effect of Ca(2+) substitution on the luminescence properties.
  • To evaluate the potential of these phosphors for white LED applications.

Main Methods:

  • Solid-state reaction method for phosphor synthesis.
  • X-ray powder diffraction (XRD) for structural analysis.

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Last Updated: May 29, 2026

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors
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Published on: November 15, 2016

Phase-Dependent Control of Trap Depth and Persistent Luminescence in Strontium Aluminate Phosphors
06:16

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  • Photoluminescence excitation and emission spectroscopy for optical characterization.

    • Main Results:

    • Successful synthesis of Eu(2+) and Mn(2+) co-doped SrAl2B2O7 phosphors.
    • Observation of energy transfer between Eu(2+) and Mn(2+) ions.
    • Ca(2+) substitution led to CIE coordinates approaching the National Television Standard Committee (NTSC) white color standard.
    • Fabrication of a white LED using Ca(0.5)Sr(0.42)Al(2)B(2)O(7):Eu(2+)(0.06), Mn(2+)(0.02) phosphor and a 370 nm InGaN chip, exhibiting color coordinates near the NTSC standard.

    Conclusions:

    • Ca(2+) substitution effectively tunes the luminescence of Eu(2+)/Mn(2+) co-doped SrAl2B2O7 phosphors.
    • The optimized phosphor shows promise as a single-host material for white LEDs.
    • The fabricated white LED demonstrates the practical applicability of this phosphor system.