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- W3008038435 abstract "Abstract In this study, we propose a white-emitting phosphors-La5BSi2O13:Dy3+ synthesized by a conventional solid state reaction. The phase purity, crystal structure, luminescence properties as well as thermal stability and chromaticity coordinates were investigated in this study. The excitation spectra of as-synthesized phosphors were characterized by sharp band extending from 300 to 500 nm. Under 348 nm excitation, La5BSi2O13:Dy3+ exhibits three emission peaks at 477 nm (blue region), 570 nm (yellow region) and 663 nm (red region) which correspond to 4F9/2→6H15/2, 4F9/2→6H13/2 and 4F9/2→6H11/2 transitions of Dy3+, respectively. The emission intensity was only decreased 13% from room temperature to 150 °C, which indicated that La5BSi2O13:Dy3+ phosphor possessed excellent thermal stability. Furthermore, The CIE chromaticity color coordinates of La5BSi2O13:Dy3+ phosphor falls in the yellowish white region. In addition, theoretical calculations of La5BSi2O13 and La5BSi2O13:Dy3+ are also carried out by first principle calculations for comparison. The results indicate that La5BSi2O13:Dy3+ is a potential candidate for white light-emitting diode applications." @default.
- W3008038435 created "2020-03-06" @default.
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- W3008038435 date "2020-03-01" @default.
- W3008038435 modified "2023-10-17" @default.
- W3008038435 title "Synthesis, luminescence properties and theoretical calculations of La5BSi2O13:Dy3+ phosphor coatings for light-emitting diodes" @default.
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- W3008038435 doi "https://doi.org/10.1016/j.tsf.2020.137865" @default.
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