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 language | English |
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Pages (from-to) | 789-792 |
Number of pages | 4 |
Journal | Materials Research Bulletin |
Volume | 44 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2009 Apr 2 |
Keywords
- A. Electronic materials
- A. Optical materials
- D. Luminescence
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering