RED-LIGHT-EMITTING PHOSPHOR AND LIGHT EMITTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a phosphor emitting red light by efficiently absorbing excited light in the near ultraviolet light region (340-420 nm).

SOLUTION: The phosphor is obtained by adding a trivalent-Eu to a host crystal containing a titanate represented by the general formula (1): M2TiO4to excite it, wherein M denotes at least one alkaline earth metal element selected from Sr, Ca, and Ba.

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