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)


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
Issue number4
Publication statusPublished - 2009 Apr 2


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

ASJC Scopus subject areas

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


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