Structure and photoluminescence properties of KSr_4(BO_3)_3:Eu^3+ red-emitting phosphor
Structure and photoluminescence properties of KSr_4(BO_3)_3:Eu^3+ red-emitting phosphor
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DOI：
10.1364/ome.2.000092
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发表时间：
2012
影响因子：
2.8
通讯作者：
Yi Zhang;Li Wu;Minyuan Ji;Biao Wang;Y. Kong;Jingjun Xu
中科院分区：
文献类型：
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作者：
Yi Zhang;Li Wu;Minyuan Ji;Biao Wang;Y. Kong;Jingjun Xu
我们用固相法合成了Eu3+激活的KSr4(BO3)3红色荧光粉。Rietveld对X射线衍射数据的修正表明，Eu3+离子倾向于占据KSr4(BO3)3结构中的Sr(2)(8c)位。在394 nm激发下，KSr4(BO3)3：Eu3+在612 nm(5D0-7F2)处有一个主要的发射峰，CIE坐标为(0.64，0.35)。通过在KSr4(BO3)3：Eu3+中共掺杂M+离子(M=Li，Na，K)来补偿电荷不平衡，可以大大提高612 nm处的发射光谱强度，但不改变CIE坐标。KSr4(BO_3)_3：Eu~(3+)红色发光材料在白光发光二极管(LED)的制备中具有潜在的应用前景。
We have synthesized a Eu3+-activated KSr4(BO3)3 red phosphor by solid state reactions. Rietveld refinement on X-ray diffraction data indicates that Eu3+ ions are inclined to occupy Sr(2) (8c) site in the structure of KSr4(BO3)3. The composition-optimized KSr4(BO3)3:Eu3+ exhibits a dominant emission peak at 612 nm (5D0-7F2) with CIE coordinates of (0.64, 0.35) under the excitation at 394 nm. By codoping M+ ions (M = Li, Na, and K) in KSr4(BO3)3:Eu3+ to compensate the charge unbalance, the intensities of emission spectra at 612 nm can be increased greatly, but the CIE coordinates will not be changed. The red-emitting KSr4(BO3)3:Eu3+ phosphor may be potential candidate in the fabrication of white light-emitting diodes (LEDs).