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A broadband-excited and narrow-line red phosphor, GdBO 3 : Ce 3+ , Tb 3+ , Eu 3+ , was synthesized by solid state method. The photoluminescence excitation and emission spectra, concentration effect and decay curves are investigated. The emission color of the phosphors can be tuned from blue (0.168, 0.018) to green (0.291, 0.590) and eventually to red (0.612, 0.372)...
High-brightness red phosphor, Ca 3 (PO 4 ) 2 :Eu 3+ was prepared by the solid-state reaction. Its photo-luminescent property was investigated and the optimum concentration of Eu 3+ -doped in the Ca 3 (PO 4 ) 2 is 4mol%. Its concentration quenching process is also studied. The single red light-emitting diode was obtained by combining InGaN...
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