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Luminescent properties and energy transfer of Eu2+/Mn2+ codoped Na(Sr, Ba)PO4 and Ba2Mg(BO3)(2) phosphors
- Authors
- Bertschinger, Kevin; Park, Hyemin; Kim, Ha Jun; Kim, Yongseon; Im, Won Bin; Choi, Sungho; Suh, Jae Yong
- Issue Date
- Apr-2020
- Publisher
- Elsevier BV
- Citation
- Journal of Luminescence, v.220, pp 1 - 8
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Luminescence
- Volume
- 220
- Start Page
- 1
- End Page
- 8
- ISSN
- 0022-2313
1872-7883
- 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%.
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Related Researcher
- Im, Won Bin
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)