Investigation on luminescence of emission-tunable Ca5Y3Na2(PO4)5SiO4F2:Eu2+,Tb3+,Mn2+ phosphors for white LEDs
Investigation on luminescence of emission-tunable Ca5Y3Na2(PO4)5SiO4F2:Eu2+,Tb3+,Mn2+ phosphors for white LEDs
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白光 LED 发射可调 Ca5Y3Na2(PO4)5SiO4F2:Eu2 ,Tb3 ,Mn2 荧光粉的发光研究
DOI：
10.1016/j.saa.2018.04.054
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Wen Yan
中科院分区：
文献类型：
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作者：
Liu Yi;Zhang Jia;Chen Wenbo;Zhao Jingang;Liu Renming;Wen Yan
为了探索新型单相白光发光材料，采用固相反应法合成了一系列Eu2+-Tb3+-Mn2+掺杂Ca5Y3Na2(PO4)5SiO4F2(CYNPS)荧光粉。 CYNPS 主体中的 Eu2+ 显示出覆盖 400 至 800 nm 宽范围的浅蓝色发射带。当Tb3+或Mn2+与Eu2+共掺杂时，出现明显的从Eu2+到Tb3+/Mn2+的能量转移，有效提高了Tb3+/Mn2+的发射强度。为了实现白色发射，Eu2+-Tb3+-Mn2+离子是三掺杂的。通过调节Mn2+浓度，可以方便地调节发光颜色。 CYNPS:0.07Eu2+、0.18Tb3+、0.15Mn2+荧光粉发出暖白光，色品坐标和相关色温分别为（0.396，0.369）和3487K。研究表明，目前的荧光粉在白光 LED 中具有潜在的应用前景。
To explore new single-phased white-light-emitting luminescent materials, a series of Eu2+-Tb3+-Mn2+doped Ca5Y3Na2(PO4)5SiO4F2(CYNPS) phosphors were synthesized by solid-state reaction method. Eu2+in the CYNPS host shows a light blue emission band covering a broad range from 400 to 800 nm. When the Tb3+or Mn2+is codoped with Eu2+, obvious energy transfer from Eu2+to Tb3+/Mn2+appears, which increases the emission intensity of Tb3+/Mn2+efficiently. To achieve white emission, the Eu2+-Tb3+-Mn2+ions are tridoped. By adjusting the Mn2+concentration, the emitting-light-color can be tuned conveniently. Warm white light was gained in the CYNPS:0.07Eu2+,0.18Tb3+,0.15Mn2+phosphor with the chromaticity coordinates and correlated color temperature of (0.396, 0.369) and 3487 K, respectively. The investigation reveals that the present phosphors could have potential application in white LEDs.