简介概要

Luminescence and energy transfer of color-tunable Lu2MgAl4SiO12:Eu2+,Ce3+,Mn2+ phosphors

来源期刊:Journal of Rare Earths2020年第5期

论文作者:Zhiqiang Ming Jing Zhao Hendrik C.Swart Zhiguo Xia

文章页码:506 - 513

摘    要:Energy transfer among the co-doped activators is an efficient route to achieve color-tunable emission in inorganic phosphors.Herein,photoluminescence tuning from blue to cyan has been achieved in the Lu2MgAl4 SiO12;Eu2+,Ce3+phosphors by varying the Ce3+ concentration with a fixed Eu2+content.With the further introduction of a Mn2+-Si4+couple into the host lattice,the emission color can be tuned to red through the energy transfer of Eu2+and Mn2+.The luminescence properties and the energy transfer mechanism were studied in detail.The energy transfer from Eu2+to Ce3+is certified as a dipolequadrupole interaction with the energy transfer efficiency of 41.4% and Eu2+to Mn2+belongs to a dipole-dipole interaction with the energy transfer efficiency of 94.3%.The results imply that this singlephased Lu2MgAl4 SiO12:Eu2+,Ce3+,Mn2+phosphor has a potential prospect for application in near-UV chip pumped white light emitting diodes.

详情信息展示

Luminescence and energy transfer of color-tunable Lu2MgAl4SiO12:Eu2+,Ce3+,Mn2+ phosphors

Zhiqiang Ming1,Jing Zhao1,Hendrik C.Swart2,Zhiguo Xia1,3,4

1. The Beijing Municipal Key Laboratory of New Energy Materials and Technologies,School of Materials Science & Engineering,University of Science and Technology Beijing2. Department of Physics,University of the Free State3. State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials,South China University of Technology4. School of Materials Science and Engineering,Universityof Science and Technology Beijing

摘 要:Energy transfer among the co-doped activators is an efficient route to achieve color-tunable emission in inorganic phosphors.Herein,photoluminescence tuning from blue to cyan has been achieved in the Lu2MgAl4 SiO12;Eu2+,Ce3+phosphors by varying the Ce3+ concentration with a fixed Eu2+content.With the further introduction of a Mn2+-Si4+couple into the host lattice,the emission color can be tuned to red through the energy transfer of Eu2+and Mn2+.The luminescence properties and the energy transfer mechanism were studied in detail.The energy transfer from Eu2+to Ce3+is certified as a dipolequadrupole interaction with the energy transfer efficiency of 41.4% and Eu2+to Mn2+belongs to a dipole-dipole interaction with the energy transfer efficiency of 94.3%.The results imply that this singlephased Lu2MgAl4 SiO12:Eu2+,Ce3+,Mn2+phosphor has a potential prospect for application in near-UV chip pumped white light emitting diodes.

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