Journal
MATERIALS RESEARCH EXPRESS
Volume 5, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aaa7c9
Keywords
aluminates; europium; photoluminescence; phosphors
Categories
Funding
- Fundamental Research Funds for the Central Universities [2652017362]
- National Natural Science Foundations of China [51472222, 51372232]
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A series of ZnAl2-xO4:xEu(3+) phosphors was synthesized by a modified co-precipitation method. The phase structure and photoluminescence properties were examined and extensively discussed. Composition-optimized ZnAl1.97O4:0.03Eu(3+) exhibited sharp, intense red characteristic emissions with the Commission Internationale de l'Eclairage coordinates of (0.62, 0.33) peaking at 620 nm under an excitation at 394 nm, corresponding to the D-5(0) -> F-7(2) transition of Eu3+. The quenching concentration of Eu3+ in ZnAl2-xO4:xEu(3+) phosphors was approximately 0.03. In addition, the concentration quenching mechanism, fluorescence decay curves, and thermally stable luminescence properties of ZnAl2-xO4:xEu(3+) phosphors were investigated. The results indicated that ZnAl2-xO4: xEu(3+) phosphors demonstrate potential applications in near-ultraviolet light-emitting diode pumped white light lamps.
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