Synthesis and luminescence properties of a novel red-emitting phosphor under longer UV wavelength excitation

摘要

The invention of barium, strontium , lanthanum and the matrix composed by containing tungsten oxide , europium active element a novel tungstate -based red phosphor consisting in using , in the long wavelength ultraviolet excitation exhibits a strong emission spectrum in the range 550 ~ 750 ultraviolet light-emitting diode (LED) and the red phosphor for long-wavelength UV excitation and suitable for the UV lamp (lamp) relates to a preparation method thereof .