| 简介 |
PURPOSE : A phosphor for a white light emitting diode, and the white light emitting diode are provided to performing the visible luminescence with a wide luminous band.
CONSTITUTION : A phosphor for a white light emitting diode contains the following : a first element selected from lithium, sodium, potassium, rubidium, or cesium; and a second element selected from magnesium, calcium, strontium, or barium. A part of the second element is substituted with a rare earth element. The phosphor emits light by the excitation of light having the peak wavelength of 200-400nm. The white light emitting diode includes a diode(120) radiating ultraviolet rays or blue light; and the phosphonic acid based phosphor(150).
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