Acta Optica Sinica, Volume. 39, Issue 11, 1116001(2019)
Synthesis and Luminescence Properties of Sr5MgLa2-x-y(BO3)6∶xBi 3+, yM (M=Eu 3+,Y 3+) Phosphors
Herein, Sr5MgLa2-x-y(BO3)6∶xBi 3+, yM (M = Eu 3+, Y 3+) (0≤x, y ≤ 1) phosphors are synthesized using the high-temperature solid phase method. Further, scanning electron microscopy and X-ray powder diffractometer are utilized to characterize the morphology and structure of the samples, and an ultraviolet-visible spectrophotometer and a fluorescence spectroscope are utilized for characterizing the luminescent properties of the samples. The results denote that the samples are pure phase in terms of the doping concentration. Sr5MgLa2-x(BO3)6∶xBi 3+exhibits a single peak blue emission with a crest value of 431 nm under an excitation of 339 nm. This emission can be attributed to the transition of Bi 3+from 3P1 to 1S0, and the quenching concentration is x=0.24. The Sr5MgLa1.76-y(BO3)6∶0.24Bi 3+, yY 3+ emission peak intensity intensifies with an increase in the Y 3+ concentration, and the excitation peaks denote a red shift. With the excitation of an ultraviolet light, the Sr5MgLa2-x-y(BO3)6∶xBi 3+, yEu 3+phosphor causes blue emission, which originates from Bi 3+, and red emission, which originates from Eu 3+. Further, there is an energy transfer process from Bi 3+ to Eu 3+, and the energy transfer efficiency can be calculated based on the fluorescence decay curve. Finally, an adjustable blue to red emission can be obtained by changing the doping amount of Bi 3+ and Eu 3+ in the Sr5MgL
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Xiaojun Wang, Lifang Liang, Kai Chen, Guohui Yang, Lili Meng. Synthesis and Luminescence Properties of Sr5MgLa2-x-y(BO3)6∶xBi 3+, yM (M=Eu 3+,Y 3+) Phosphors[J]. Acta Optica Sinica, 2019, 39(11): 1116001
Category: Materials
Received: May. 27, 2019
Accepted: Jul. 24, 2019
Published Online: Nov. 6, 2019
The Author Email: Meng Lili (mll_0001@163.com)