红色荧光粉Sr3LiSbO6∶Eu3+制备及其发光性质

采用高温固相法制备了Sr3LiSbO6∶Eu3+(SLSO∶Eu3+)红色荧光粉。系统研究了Eu3+ 浓度对发光强度的影响, 并对样品进行了XRD、荧光光谱（PL）、荧光寿命、热稳定性和色坐标分析。结果表明, 制备的荧光粉Sr3LiSbO6∶Eu3+可被紫外光激发, 并在612 nm处表现出较强的红光发射带。研究了样品的浓度猝灭效应, 样品的最佳掺杂浓度为0.04%, 猝灭主要是因为偶极-偶极相互作用引起的。此外, 还探讨了样品的热稳定性, 在423 K时的发光强度为室温下的43.1%。最后对样品的荧光寿命和CIE进行了测试。以上结果表明制备的荧光粉Sr3LiSbO6∶Eu3+是一种新型LED红色荧光材料。

Abstract

Sr3LiSbO6∶Eu3+ red phosphors were synthesized by high temperature state reaction. The influence of Eu3+ concentration on the luminous intensity was systematically studied, and the samples were analyzed by XRD, fluorescence spectroscopy(PL), fluorescence lifetime, thermal stability and color coordinates. The results show that the prepared phosphor Sr3LiSbO6∶Eu3+ can be excited by ultraviolet light and exhibits a strong red light emission band at 612 nm. The concentration quenching effect of the sample was studied, and the best doping concentration of the sample was 0.04%, which was mainly caused by the dipole-dipole interaction. In addition, the thermal stability of the sample was also discussed. The luminous intensity at 423 K was 43.1% of that at room temperature. Finally, the fluorescence lifetime and CIE of the samples were tested. The above results indicate that the prepared phosphor Sr3LiSbO6∶Eu3+ has great prospects in the synthesis of LEDs.

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彭晓, 阳维维, 凌东雄, 吕伟. 红色荧光粉Sr₃LiSbO₆∶Eu³⁺制备及其发光性质[J]. 发光学报, 2021, 42(4): 455. PENG Xiao, YANG Wei-wei, LING Dong-xiong, LYU Wei. Preparation and Luminescence Properties of Red Sr₃LiSbO₆∶Eu³⁺ Phosphor[J]. Chinese Journal of Luminescence, 2021, 42(4): 455.

红色荧光粉Sr₃LiSbO₆∶Eu³⁺制备及其发光性质

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