Cao Renping, Xue Hongdong, Yu Xiaoguang, Xiao Fen, Wu Donglan, Zhang Fenxiang
J Nanosci Nanotechnol. 2016 Apr;16(4):3489-93. doi: 10.1166/jnn.2016.11793.
A series of Mn4+ doped SrMgAl10O17 phosphors are synthesized by a conventional solid-state reaction method in air, and their crystal structure, morphology, and fluorescence properties are investigated. The luminescence properties show clearly that SrMgAl10O17:Mn4+ phosphor can be excited by UV (200-380 nm), near UV (380-420 nm), and blue (420-480 nm) bands of LEDs chip, and emits red light in the range of 600 nm to 750 nm with satisfying CIE chromaticity coordinates (0.7207, 0.2793). The optimal doping concentration of Mn4+ ion is ~1 mol%, and its lifetime is ~1.15 ms. The possible luminous mechanism of Mn4+ ion is discussed by Tanabe-Sugano diagram. These experiment results indicate that Mn4+ doped SrMgAl10O17 phosphors can be a potential application as a red-emitting phosphor candidate in white LEDs.
通过传统的固态反应法在空气中合成了一系列Mn4+掺杂的SrMgAl10O17荧光粉，并对其晶体结构、形貌和荧光性能进行了研究。发光性能清楚地表明，SrMgAl10O17:Mn4+荧光粉可以被LED芯片的紫外（200 - 380 nm）、近紫外（380 - 420 nm）和蓝色（420 - 480 nm）波段激发，并在600 nm至750 nm范围内发射红光，其CIE色度坐标为（0.7207, 0.2793），令人满意。Mn4+离子的最佳掺杂浓度约为1 mol%，其寿命约为1.15 ms。通过田边 - 菅野图讨论了Mn4+离子可能的发光机制。这些实验结果表明，Mn4+掺杂的SrMgAl10O17荧光粉作为白光LED中的红色发光荧光粉候选材料具有潜在的应用价值。
