YANG Zhi-ping, FANG Heng-jiu, LI Xuan-xuan etc. Syntheis and Luminescence Properties of SrLiAl<sub>3</sub>N<sub>4</sub>:Eu<sup>2+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(1): 1-6
YANG Zhi-ping, FANG Heng-jiu, LI Xuan-xuan etc. Syntheis and Luminescence Properties of SrLiAl<sub>3</sub>N<sub>4</sub>:Eu<sup>2+</sup> Red Phosphor[J]. Chinese Journal of Luminescence, 2016,37(1): 1-6 DOI: 10.3788/fgxb20163701.0001.
Syntheis and Luminescence Properties of SrLiAl3N4:Eu2+ Red Phosphor
red-emitting phosphors were prepared in reducing atmosphere by high temperature solid-state reaction which could be effectively excited by ultraviolet and blue light. Luminescence properties and crystal structure of the phosphors were investigated. X-ray diffraction patterns and scanning electron microscopy image show that the sample is a pure phase of SrLiAl
3
N
4
.
In the excitation spectrum (from 200 to 600 nm)
there are two wide bands and peaks at 267 nm and 474 nm. The emission spectrum shows a wide band with a peak at 654 nm corresponding to the 5d4f transition of Eu
2+
. The effect of the doping concentration of Eu
2+
was investigated. The result shows that the luminescent intensity firstly increases and then decreases with the increasing of Eu
2+
mole fraction
and the best doping mole fraction of Eu
2+
is 0.4%. The concentration quenching will occur if Eu
2+
continue to be doped. The phosphors have good thermal quenching properties and quantum efficiency.
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references
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Related Institution
Department of Physics, Changchun Normal University
Key Laboratory of Luminescence Science and Technology, Chinese Academy of Sciences & State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
School of Materials Science and Engineering, Zhengzhou University
School of Electrical Engineering and Intelligentization, Dongguan University of Technology
Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University