PHOSPHOR FOR WHITE LIGHT EMITTING DIODE AND WHITE LIGHT EMITTING DIODE USING THE SAME

摘要

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).