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Study on the Emission Property in Ce3+, Tb3+, and Eu3+ Co-doped CaHfO3 Phosphors via Successive Energy Transfer

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Abstract

We investigated the energy transfer among three rare-earth ions, Ce3+, Tb3+, and Eu3+, and the related emission properties in a host material CaHfO3 by using photoluminescence spectroscopy. We found that in case of the Tb3+ and Eu3+ doubly-doped CaHfO3, the visible emission intensity of Eu3+ could be activated with the photoexcitation of the transitions in Tb3+ through an energy transfer from Tb3+ to Eu3+. By adding Ce3+ ions to this doubly doped sample, we obtained the Eu3+ emission with near-ultraviolet (NUV) light excitation in Ce3+ via the successive energy transfers Ce3+ → Tb3+ and Tb3+ → Eu3+. We observed that the emission colors were tuned from blue to green/yellow and then to red with NUV photoexcitation in Ce3+/Tb3+/Eu3+-codoped CaHfO3.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2018R1D1A1A02086130).

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Correspondence to Y. S. Lee.

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Lee, T., Jang, S., Kim, H. et al. Study on the Emission Property in Ce3+, Tb3+, and Eu3+ Co-doped CaHfO3 Phosphors via Successive Energy Transfer. J. Korean Phys. Soc. 76, 237–242 (2020). https://doi.org/10.3938/jkps.76.237

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Keywords

  • CaHfO3
  • Co-doping
  • Ce3+/Tb3+/Eu3+
  • Energy transfer