Opt Lett. 2018 Oct 15;43(20):5138-5141. doi: 10.1364/OL.43.005138.
In this work, Ce-activated BaLuBO (BLBO) blue-emitting phosphors were prepared, and their photoluminescence properties were studied. It was found that these phosphors can be excited over a broad excitation band range from 300 nm to 430 nm and generated a blue emission band in the 400-550 nm range with a maximum peak at 443 nm. The full width at half maximum of the blue emission band was about 68 nm. The optimal doping concentration of Ce ions was determined to be 3 mol. %, and the BLBO:0.03Ce phosphors possessed an internal quantum efficiency as high as 71%. Finally, by coating the phosphors with a blend of commercial CaAlSiN:Eu red-emitting phosphors, (Ba,Sr)SiO:Eu green-emitting phosphors, and BLBO:0.03Ce blue-emitting phosphors on a 380 nm ultraviolet light-emitting diode (LED) chip, a white LED device with a color-rendering index of ∼94 and correlated color temperature of 4952 K was obtained.
在这项工作中，制备了 Ce 激活的 BaLuBO（BLBO）蓝色发光荧光粉，并研究了它们的光致发光性能。结果发现，这些荧光粉可以在 300nm 至 430nm 的宽激发带范围内被激发，并在 400nm 至 550nm 的范围内产生一个蓝色发射带，最大峰值位于 443nm。蓝色发射带的半峰全宽约为 68nm。Ce 离子的最佳掺杂浓度确定为 3mol%，BLBO:0.03Ce 荧光粉的内量子效率高达 71%。最后，通过在 380nm 紫外发光二极管（LED）芯片上涂覆由商用 CaAlSiN:Eu 红色发射荧光粉、(Ba,Sr)SiO:Eu 绿色发射荧光粉和 BLBO:0.03Ce 蓝色发射荧光粉组成的混合物，获得了显色指数约为 94 和相关色温为 4952K 的白色 LED 器件。
