Photoluminescence properties of color-tunable novel Na2Ca 4(PO4)2SiO4:Ce3+, Tb 3+ near ultraviolet convertible phosphors

Dawei Wen, Guanhui Yang, Hui Yang, Jianxin Shi, Menglian Gong, Mingmei Wu

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A series of Ce3+ and Tb3+ doped color-tunable novel phosphors with both phosphate and silicate hosts, Na2Ca 4(PO4)2SiO4, were synthesized by a solid-state process for the first time as far as we know. The photoluminescence properties, energy transfer (ET) among rare earth ions and temperature quenching effect were investigated. Dipole-dipole and dipole-quadrupole interactions were proved to be responsible for ET mechanisms of Ce3+-Ce3+ and Ce3+-Tb3+ in Na2Ca4(PO 4)2SiO4, respectively. Furthermore, the emitting color of phosphors can be tuned from blue to green by increasing the dopant concentrations of Tb3+ ions. Finally, temperature-quenching measurement revealed that the as-synthesized phosphor had good thermal characteristics, which indicates that the phosphor can be served as a key material for phosphor-converted white LEDs.

Original languageEnglish
Pages (from-to)63-66
Number of pages4
JournalMaterials Letters
Volume125
DOIs
Publication statusPublished - 2014 Jun 15

Keywords

  • Energy transfer
  • LED
  • Luminescence
  • Phosphor

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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