| abstract |
PROBLEM TO BE SOLVED: To provide a light emitting substance for exciting ultraviolet light or visible light having a light emission different from that of a rare earth component and containing a compound containing lead and / or copper. SOLUTION: A part of light emitted from a light emitting element is absorbed to emit light having a wavelength different from the absorbed light, and aluminate, silicate, antimonate, germanate and / or germane are emitted. A compound obtained by mixing one or more of nate-silicate compounds and phosphate compounds. Thereby, besides containing lead and / or copper, the emission peak can be shifted to a long wavelength region or a short wavelength region, and a highly efficient luminescent material capable of replacing alkaline earth ions can be obtained. This luminescent material has a wide color temperature range, excellent color rendering, and good resistance to water, moisture and polar solvents. [Selection figure] None |