| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oxynitride-based phosphor in which white light-emitting diode using blue light-emitting diode or ultraviolet light-emitting diode as a light source can be made highly luminescent and to provide a light emitter by using the phosphor. <P>SOLUTION: The acid nitride phosphor comprises at least one kind of element selected from a group consisting of Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Cr, Mn, Pb and Sb used as an activator Z, one or more kinds of elements selected from a group consisting of Sc, Y, La, Gd and Yb, an alkaline earth metal element, an element of the group IVA of the periodic table and an element of the group IVB or the acid nitride phosphor comprises the activator Z, an alkali metal, an alkaline earth metal element and an element of the group IVA and an element of the group IVB of the periodic table or the acid nitride phosphor comprises the activator Z, one or more kinds of elements selected from a group consisting of Sc, Y, La, Gd and Yb, an alkali metal, an alkaline earth metal element and an element of the group IVA and an element of the group IVB of the periodic table. The light emitter is obtained by combining the phosphor with a light emission element. <P>COPYRIGHT: (C)2007,JPO&INPIT |
