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- W2022185855 abstract "Ce3+ and Ce3+/Tb3+-activated Y4Si2O7N2 phosphors are synthesized by the solid-state method, which can be efficiently excited by near ultraviolet (UV) light emitting diode (LED) chips. The PL spectrum of Y4Si2O7N2:Ce3+ shows a broad hump between 380 and 650 nm, assigned to the electron transition from the 4f energy level to different 5d sub levels of the Ce3+ ions at different Y3+ sites. The color of the Y4Si2O7N2:Ce3+ phosphor can shift from blue to green by introducing Tb3+. In addition, the energy transfer process from Ce3+ to Tb3+ in the Y4Si2O7N2 host was investigated and discussed in terms of both the luminescence spectra and decay curves. The energy transfer critical distance has been calculated and evaluated by the concentration quenching method. Therefore, the Ce3+ and Ce3+/Tb3+-activated Y4Si2O7N2 phosphors can serve as key materials for phosphor-converted white-light UV-LEDs." @default.
- W2022185855 created "2016-06-24" @default.
- W2022185855 creator A5005683879 @default.
- W2022185855 creator A5070426045 @default.
- W2022185855 date "2013-01-01" @default.
- W2022185855 modified "2023-10-03" @default.
- W2022185855 title "Preparation and luminescence properties of Ce3+ and Ce3+/Tb3+-activated Y4Si2O7N2 phosphors" @default.
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- W2022185855 doi "https://doi.org/10.1039/c3dt51470f" @default.
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