| 简介 |
PURPOSE : A ceramic phosphor, a white light emitting diode containing the phosphor, a method for preparing the white light emitting diode, and a white light emitting diode lamp containing the phosphor are provided to improve thermal stability and chemical resistance of a ceramic phosphor.
CONSTITUTION : A ceramic phosphor has a composition represented by M_(1-x) Re_x Mg_(2-y) Al_(12-y-z) O_(16-y-z) N_y and has an excitation wavelength of 200-500 nm, wherein M is at least one element selected from Ba, Sr and Ca; Re is at least one element selected from rare earth elements; 0.4
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