Journal
DYES AND PIGMENTS
Volume 154, Issue -, Pages 82-86Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2018.02.047
Keywords
Phosphors; Luminescence; Eu3+ ions; Vanadate; White emissions
Funding
- National Natural Science Foundation of China [51502190]
- Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi
- Start-up Research Grant of Taiyuan University of Technology [Tyutrc201489a]
- Excellent Young Scholars Research Grant of Taiyuan University of Technology [2014YQ009, 2015YQ006, 2016YQ03]
- Open Fund of the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) [2017-skllmd-01]
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In this paper, self-activated LiCa3MgV3O12 (LCMV) and Eu3+-activated LCMV phosphors were prepared by a traditional solid-state synthesis method. The LCMV host exhibited a broadband excitation spectrum in the near-ultraviolet (NUV) wavelength range of 250-400 nm and gave rise to a strong broadband bluish-green emission in the 400-700 nm visible region. Due to the energy transfer from [VO4](3-) groups to Eu3+ ions, Eu3+-activated LCMV phosphors showed tunable bluish-green-to-white-to-red photoluminescence by increasing the Eu3+ concentrations under NUV excitation at 336 nm. Particularly, the LCMV:0.005Eu(3+) sample emitted bright white light with high internal quantum efficiency as great as 53%. These tunable white-light-emitting LCMV:Eu3+ phosphors are promising for applications in white light-emitting diodes and optoelectronic displays.
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