Luminescent properties and energy transfer of Eu2+/Mn2+ codoped Na(Sr,Ba)PO4 and Ba2Mg(BO3)2 phosphors

Authors

Kevin Bertschinger, Michigan Technological UniversityFollow
Hyemin Park, Korea Research Institute of Chemical Technology (KRICT)
Ha Jun Kim, Hanyang University
Yongseon Kim, Inha University
Sungho Choi, Korea Research Institute of Chemical Technology (KRICT)
Jae Yong Suh, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

4-2020

Department

Department of Physics

Abstract

Two series of the phosphors Na(Sr,Ba)PO₄ and Ba₂Mg(BO₃)₂ codoped with different concentrations of Eu²⁺ and Mn²⁺ were synthesized using a solid-state reaction method. The energy transfer between Eu²⁺ and Mn²⁺ in both host crystals was investigated by steady-state and time-resolved photoluminescence measurements. For Na(Sr,Ba)PO₄, Eu²⁺ has an emission centered at 460 nm which overlaps with multiple excitation transition of Mn²⁺. In contrast, for Ba₂Mg(BO₃)₂, Eu²⁺ emission is red-shifted to 612 nm, which causes a single spectral overlap between Eu²⁺ and Mn²⁺ energy levels. As a result, the energy transfer efficiency is improved between Eu²⁺ and Mn²⁺ in Ba₂Mg(BO₃)₂ with a maximum energy transfer efficiency of 91% compared to that in Na(Sr,Ba)PO₄ with that of 57%.

Publication Title

Journal of Luminescence

Recommended Citation

Bertschinger, K., Park, H., Kim, H. J., Kim, Y., Choi, S., & Suh, J. Y. (2020). Luminescent properties and energy transfer of Eu2+/Mn2+ codoped Na(Sr,Ba)PO4 and Ba2Mg(BO3)2 phosphors. Journal of Luminescence, 220. http://doi.org/10.1016/j.jlumin.2019.116958
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/1488