| 摘要 |
Provided is a novel phosphor formed by using oxynitride having a good durability and possibly emits diverse color of light from green to yellow when using a blue emitting diode or a ultraviolet emitting diode as an excitation source. The phosphor according to the present invention includes a host material represented by the general formula of (Ca 1-x M1 x ) a (La 1-y M2 y ) b Si c N d O e (in which 0.5‰¤b/a‰¤7, 1.5‰¤c/(a+b)‰¤3.5, 1‰¤d/c‰¤1.8, 0.6‰¤e/(a+b)‰¤2, 0‰¤x‰¤0.5, and 0‰¤y‰¤0.5) and having a monoclinic crystalline structure, and at least one dissolved activator selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm and Yb. M1 is at least one element selected from Ba, Mg, Sr, Mn and Zn, and M2 being at least one element selected from Y, Lu, Sc, Gd, Tb, Ce, Nd, Sm, Dy, Ho, Er, Tm, Yb, Al, Ga, Ge, Sn and In. |
