Photoluminescence investigation of rare-earth activated GdCa3(GaO)3(BO3)4 phosphors under UV excitation

Hyun Ai Kyung, Sungho Choi, Tae Yeon Seong, Ha Kyun Jung

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    A borate compound was adopted as a new host material of Eu3+ and Tb3+ activators to fabricate efficient luminescence materials. The phosphor compositions, Gd1-xEuxCa3(GaO)3(BO 3)4 and Gd1-xTbxCa3(GaO)3(BO 3)4, were synthesized by conventional solid-state reactions. The crystalline phases of the resulting powders were identified using an X-ray diffraction system. Their photoluminescence properties were investigated under long-wavelength UV excitation. The Eu3+-doped and Tb3+-doped GdCa3(GaO)3(BO3)4 phosphors efficiently emitted red and green light, respectively. The temperature dependency of emission intensity was measured in a range from room temperature to 150 °C. The emission intensities of the red and green phosphors at 150 °C are 87% and 91% of those at room temperature, respectively. In addition, the decay times of both the red and green phosphors are shorter than 3 ms.

    Original languageEnglish
    Pages (from-to)789-792
    Number of pages4
    JournalMaterials Research Bulletin
    Volume44
    Issue number4
    DOIs
    Publication statusPublished - 2009 Apr 2

    Bibliographical note

    Funding Information:
    This research was supported by a grant from Information Display R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Knowledge Economy of Korean government.

    Keywords

    • A. Electronic materials
    • A. Optical materials
    • D. Luminescence

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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