| 摘要 |
A light emitting device wherein a blue screen or a red screen is excited by 5 to 25eV photons or electrons, the blue screen containing a self-activated phosphor which is represented by the general formula MPbV1-bO4 where M stands for at least one member selected from the group consisting of yttrium (Y), scandium (Sc), rare-earth elements having atomic numbers of 57-62 and 64-71, and group-IIIb elements of the periodic table, and where O<b<1.0, the red screen containing a trivalent europium (Eu3+) activated phosphor which is represented by the general formula M1-aEuaPbV1-bO4 where M stands for at least one member selected from the group consisting of yttrium (Y), scandium (Sc), rare-earth elements having atomic numbers of 57-62 and 64-71, and group-IIIb elements of the periodic table, and where O<a<1.0 and 0<b</=1.0.
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