Synthesis, tunable luminescence and thermal stability of Mg2Al4Si5O18:Ce3+/Mn2+ phosphors
Synthesis, tunable luminescence and thermal stability of Mg2Al4Si5O18:Ce3+/Mn2+ phosphors
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DOI：
10.1007/s10854-018-8799-4
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发表时间：
2018-02
期刊：
影响因子：
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通讯作者：
Yeqiu Wu;T. He
中科院分区：
文献类型：
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作者：
Yeqiu Wu;T. He
采用固相反应法合成了Ce 3 +/Mn 2+单掺和共掺Mg 2Al 4Si 5 O 18荧光粉。对合成的荧光粉的物相、发光性能和热稳定性进行了研究。Ce ~（3+）和Mn ~（2+）单掺杂的Mg_2Al_4Si_5O_（18）荧光粉的发射带分别位于蓝色和黄红色区域。在Ce 3+和Mn 2+共掺杂的Mg 2Al 4Si 5 O 18中，由于Ce 3+向Mn 2+的能量传递，获得了可调谐的发光。在Mg 2Al 4Si 5 O 18：Ce 3 +/Mn 2+荧光粉中，Ce 3+浓度一定时，能量传递效率随Mn 2+浓度的增加而增加，Ce 3+发光强度不断降低，衰减时间不断缩短。此外，其发光性能和热稳定性对发光二极管领域的应用具有重要意义。
Ce3+/Mn2+singly doped and codoped Mg2Al4Si5O18phosphors were synthesized by a solid state reaction. The phase, luminescent properties and thermal stability of the synthesized phosphors were investigated. Ce3+and Mn2+singly doped Mg2Al4Si5O18phosphors show emission bands locating in blue and yellow–red regions, respectively. In Ce3+and Mn2+codoped Mg2Al4Si5O18, tunable luminescence was obtained because of the energy transfer from Ce3+to Mn2+. In Mg2Al4Si5O18:Ce3+/Mn2+phosphors with a fixed Ce3+concentration, energy transfer efficiency increases with the increasing Mn2+concentration, which is confirmed by the continually decreasing intensity and shortening decay time of Ce3+emission. Moreover, the luminescent properties and thermal stability provide a great significance on the applications in the field of light emitting diodes.