A series of novel garnet Y 2-x LaCaGa 3 ZrO 12 :xLn 3+ (0 ≤ x ≤ 0.12; Ln = Eu and Tb) phosphors was prepared by a solid-state reaction. Their structural and photoluminescence properties were characterized by X-ray diffraction, Rietveld refinement, and photoluminescence spectroscopy. The studied Y 2-x LaCaGa 3 ZrO 12 :xLn 3+ phosphors crystallized in a cubic garnet crystal structure and Ia3¯d space group. The Eu 3+ - and Tb 3+ -doped Y 2-x LaCaGa 3 ZrO 12 phosphors exhibited strong red and green light emissions, respectively, and high emission color purity. With increasing Tb 3+ content, the emitting color of the Y 2-x LaCaGa 3 ZrO 12 :xTb 3+ phosphors shifted to the green spectral region because of cross-relaxation among Tb 3+ ions. The Y 2-x LaCaGa 3 ZrO 12 :xLn phosphors are suitable for applications in white light-emitting diode and other optoelectronic devices.
Bibliographical noteFunding Information:
We also acknowledge the financial support by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, industry & Energy (No. 20184030202260 ).
© 2018 Elsevier Ltd
- Y LaCaGa ZrO
ASJC Scopus subject areas
- Chemical Engineering(all)
- Process Chemistry and Technology