J Mater Sci Technol ›› 1997, Vol. 13 ›› Issue (6): 479-482.

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Luminescence Characteristics and Energy Transfer Machanism of LaOBr:Tb~(3+) (Dy~(3+))

Jinghai YANG; Chunzhong MIN and Zhanguo ZONG(Institute of Solid State Physics, Siping Normal University, Siping 136000, China)Yongji LI(Siping Teachers College, Siping 136000, China)Xingyin LIU(Changchun Institute of Physics, Chinese Academy of Sciences,   

  • Received:1997-11-28 Revised:1997-11-28 Online:1997-11-28 Published:2009-10-10

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Abstract: The rare earth luminescence materials LaOBrfTb3+(Dy3+) were synthesized at high temperature,and the structure and luminescence characteristics were studied. The co-doping Dy3+ may make the energy of 5D3 of Tb3+ transfer to 5D4 level, which makes the emission of 5D4-7FJ (J=0,1... 6), specially of 5D4-7F5, enhance obviously, and the total brightness is increased by about 40% in comparison with the samples without Dy3+ cations, as a result of the energy transfer of dipole-dipole interaction.

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