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

    21 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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