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Simultaneously tuning the emission color and improving thermal stability via energy transfer in apatite-type phosphors
Wu, D.; W. G. Xiao; L. L. Zhang; X. Zhang; Z. D. Hao; G. H. Pan; Y. S. Luo and J. H. Zhang
2017
发表期刊Journal of Materials Chemistry C
卷号5期号:45
摘要Developing phosphors with high quantum efficiency and superior thermal stability is still a challenge for phosphor-converted white Eight-emitting diodes (w-LEDs). Energy transfer between ions is usually utilized to tune the emission wavelength. In this study, we demonstrate that in addition to the tunable emission color, an improved thermal stability can be achieved by energy transfer from Ce3+ to Tb3+ in Ce3+ and Tb3+ codoped Ba2Y3(SiO4)(3)F (BYSF:Ce3+,Tb3+) phosphors without quantum efficiency Loss, which is ascribed to the combined effect of fast energy transfer within the nearest Ce3+ Tb3+ pairs via electric dipole quadrupole interactions, and the following energy diffusion among the Tb3+ ions. An efficient energy transfer from Ce3+ to Tb3+ results in the novel green phosphor BYSF:2%Ce3+,40%Tb3+ with an internal quantum efficiency of as high as 83.12%. In addition, a w-LED [amp was fabricated to explore its possible application in w-LEDs based on near UV LEDs. Our results indicate that fast energy transfer to Tb3+ may provide an alternative way of improving the thermal stability of phosphors.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59317
专题中科院长春光机所知识产出
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GB/T 7714
Wu, D.,W. G. Xiao,L. L. Zhang,et al. Simultaneously tuning the emission color and improving thermal stability via energy transfer in apatite-type phosphors[J]. Journal of Materials Chemistry C,2017,5(45).
APA Wu, D..,W. G. Xiao.,L. L. Zhang.,X. Zhang.,Z. D. Hao.,...&Y. S. Luo and J. H. Zhang.(2017).Simultaneously tuning the emission color and improving thermal stability via energy transfer in apatite-type phosphors.Journal of Materials Chemistry C,5(45).
MLA Wu, D.,et al."Simultaneously tuning the emission color and improving thermal stability via energy transfer in apatite-type phosphors".Journal of Materials Chemistry C 5.45(2017).
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