Synthesis, energy transfer and tunable emission properties of SrSb2O6:Eu3+, Bi3+ phosphor
Synthesis, energy transfer and tunable emission properties of SrSb2O6:Eu3+, Bi3+ phosphor
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SrSb2O6:Eu3、Bi3荧光粉的合成、能量传输和可调发射特性
DOI：
10.1016/j.saa.2016.06.049
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发表时间：
2016-12-05
影响因子：
4.4
通讯作者：
Yu, Xiaoguang
中科院分区：
文献类型：
--
作者：
Cao, Renping;Fu, Ting;Yu, Xiaoguang
采用固相反应法在空气中合成了基质SrSb 2 O 6，SrSb 2 O 6：Bi 3+，SrSb 2 O 6：Eu 3+和SrSb 2 O 6：Eu 3+，Bi 3+荧光粉。基质SrSb_2O_6在254 nm激发下，由于Sb ~（5+）→ O ~（2-）跃迁，在320-780 nm范围内产生微弱的绿黄发光。SrSb_2 O_6：Bi ~（3+）荧光粉在365 nm激发下，由于Bi ~（3+）离子的P-3（1）-> S-1（0）跃迁，在400-650 nm范围内发出绿色光。当Eu 3+浓度从0增加到7mol%时，254 nm激发的SrSb 2 O 6：Eu 3+荧光粉显示出从绿色到橙红色光的系统变化色调，而394 nm激发的SrSb 2 O 6：Eu 3+荧光粉仅显示橙红色光。在SrSb_2O_6：Eu ~（3+）荧光粉中，Eu ~（3+）的最佳掺杂浓度约为4mol%。SrSb_2O_6：Eu ~（3+），Bi ~（3+）荧光粉在254和394 nm激发下发出橙红色光。由于Bi ~（3+）离子在SrSb_2O_6：Eu ~（3+），Bi ~（3+）荧光粉中的助熔剂作用和能量传递作用，Bi ~（3+）离子共掺杂可使SrSb_2O_6：Eu ~（3+）荧光粉的发光强度提高2倍以上。通过Sb 2 O 62-基、Bi 3+和Eu 3+离子的简化能级图以及它们之间的能量传递过程，分析和解释了SrSb 2 O 6：Eu 3+，Bi 3+荧光粉的发光机理。(C)© 2016 Elsevier B. V.版权所有。
Host SrSb2O6, SrSb2O6:Bi3+, SrSb2O6:Eu3+, and SrSb2O6:Eu3+, Bi3+ phosphors are synthesized by solid state reaction method in air. Host SrSb2O6 with excitation 254 nm shows weak green-yellow emission in the range of 320-780 nm due to Sb5+ -> O2- transition. SrSb2O6:Bi3+ phosphor with excitation 365 nm emits green light within the range 400-650 nm owing to the P-3(1) -> S-1(0) transition of Bi3+ ion. SrSb2O6:Eu3+ phosphor with excitation 254 nm exhibits a systematically varied hue from green to orange-red light by increasing Eu3+ concentration from 0 to 7 mol%, and that with excitation 394 nm only shows orange-red light. The optimal Eu3+ concentration is similar to 4 mol% in SrSb2O6:Eu3+ phosphor. SrSb2O6:Eu3+, Bi3+ phosphor with excitation 254 and 394 nm emits orange-red light. Emission intensity of SrSb2O6:Eu3+ phosphor may be enhanced >2 times by co-doping Bi3+ ion because of the fluxing agent and energy transfer roles of Bi3+ ion in SrSb2O6:Eu3+, Bi3+ phosphor. The luminous mechanism of SrSb2O6:Eu3+, Bi3+ phosphor is analyzed and explained by the simplified energy level diagrams of Sb2O62- group, Bi3+ and Eu3+ ions, and energy transfer processes between them. (C) 2016 Elsevier B.V. All rights reserved.