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[Stable high quality luminescent material CaAl4O7:Tb3+, Ce3+].

D Jia1, B Wu, J Zhu

  • 1Central Iron and Steel Research Institute, 100081 Beijing.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|September 5, 2003
PubMed
Summary
This summary is machine-generated.

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Researchers synthesized CaAl4O7:Tb3+, Ce3+ materials with controlled particle size. These novel phosphors exhibit characteristic Tb3+ emission lines, indicating potential for advanced optical applications.

Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Luminescence

Context:

  • Calcium aluminate (CaAl4O7) host lattice doped with terbium (Tb3+) and cerium (Ce3+) ions.
  • Synthesis via sintering at 1,300°C in a reducing N2 + 5% H2 atmosphere.
  • Controlled nanoparticle size (< 1 micron) with regular atomic-scale lattice structure.

Purpose:

  • To synthesize and characterize CaAl4O7:Tb3+, Ce3+ phosphors.
  • To investigate the optical properties and luminescence of the doped material.
  • To assess the material's potential for applications requiring specific optical transitions.

Summary:

  • CaAl4O7:Tb3+, Ce3+ phosphors were successfully synthesized using a high-temperature sintering process under reducing conditions.
  • Observed emission lines at 485, 545, 590, and 620 nm correspond to the 5D4 to 7FJ (J = 6,5,4,3) transitions of Tb3+ ions.

Related Experiment Videos

  • The synthesized materials exhibit a regular lattice structure and maintain the characteristic optical properties of Tb3+ emitters, with reduced host structure uncertainty.

    • Impact:

    • Demonstrates the successful doping of CaAl4O7 with Tb3+ and Ce3+ for luminescent applications.
    • Provides insights into the synthesis-structure-property relationships of novel phosphor materials.
    • Highlights the potential of these materials for applications in lighting, displays, and sensing technologies.