Luminescence properties and energy transfer studies of a color tunable BaY2Si3O10:Tm3+,Dy3+ phosphor
Luminescence properties and energy transfer studies of a color tunable BaY2Si3O10:Tm3+,Dy3+ phosphor
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DOI：
10.1016/j.optmat.2016.01.023
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发表时间：
2016-03
影响因子：
3.9
通讯作者：
Jun Zhou;Z. Xia
中科院分区：
文献类型：
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作者：
Jun Zhou;Z. Xia
采用高温固相法合成了BaY2Si3O10：Tm3+，Dy3+系列可调色白光荧光粉，研究了它们的相结构、发光性能和稀土离子间的能量传递过程。在紫外光激发下，Tm~(3+)离子和Dy3+离子分别在458 nm和576 nm处产生蓝色发射带和576 nm发射带，从而获得依赖于掺杂浓度的白光发射。此外，Tm~(3+)和Dy~(3+)离子之间的能量传递过程是通过偶极-四极机制实现的。初步研究表明，该荧光粉有望成为紫外光芯片泵浦白光LED的一种单相白光荧光粉。
A series of color-tunable and white light emitting phosphors BaY2Si3O10:Tm3+,Dy3+were synthesized by a high temperature solid-state reaction, and their phase structure, photoluminescence properties, and energy transfer processes between rare-earth ions were investigated in detail. Upon UV excitation, white light emission depending on dopant concentrations could be achieved by integrating a blue emission band located at 458 nm and an orange one located at 576 nm attributed to Tm3+and Dy3+ions, respectively. In addition, the energy transfer process between Tm3+and Dy3+ions was demonstrated to be a resonant type via a dipole–quadrupole mechanism. Preliminary studies showed that the phosphor might be promising as a single-phased white-light-emitting phosphor for UV chip pumped white-light LEDs.